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Message-ID: <20190420143202.GA10845@kroah.com>
Date: Sat, 20 Apr 2019 16:32:03 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, Jiri Slaby <jslaby@...e.cz>
Subject: Re: Linux 4.9.170
diff --git a/Makefile b/Makefile
index 23cc23c47adf..966069dab768 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 169
+SUBLEVEL = 170
EXTRAVERSION =
NAME = Roaring Lionus
diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index 1f945d0f40da..208bf2c9e7b0 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -107,6 +107,7 @@ ENTRY(stext)
; r2 = pointer to uboot provided cmdline or external DTB in mem
; These are handled later in handle_uboot_args()
st r0, [@uboot_tag]
+ st r1, [@uboot_magic]
st r2, [@uboot_arg]
#endif
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 9119bea503a7..9f96120eee6e 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -32,6 +32,7 @@ unsigned int intr_to_DE_cnt;
/* Part of U-boot ABI: see head.S */
int __initdata uboot_tag;
+int __initdata uboot_magic;
char __initdata *uboot_arg;
const struct machine_desc *machine_desc;
@@ -400,6 +401,8 @@ static inline bool uboot_arg_invalid(unsigned long addr)
#define UBOOT_TAG_NONE 0
#define UBOOT_TAG_CMDLINE 1
#define UBOOT_TAG_DTB 2
+/* We always pass 0 as magic from U-boot */
+#define UBOOT_MAGIC_VALUE 0
void __init handle_uboot_args(void)
{
@@ -415,6 +418,11 @@ void __init handle_uboot_args(void)
goto ignore_uboot_args;
}
+ if (uboot_magic != UBOOT_MAGIC_VALUE) {
+ pr_warn(IGNORE_ARGS "non zero uboot magic\n");
+ goto ignore_uboot_args;
+ }
+
if (uboot_tag != UBOOT_TAG_NONE &&
uboot_arg_invalid((unsigned long)uboot_arg)) {
pr_warn(IGNORE_ARGS "invalid uboot arg: '%px'\n", uboot_arg);
diff --git a/arch/arm/crypto/sha256-armv4.pl b/arch/arm/crypto/sha256-armv4.pl
index fac0533ea633..f64e8413ab9a 100644
--- a/arch/arm/crypto/sha256-armv4.pl
+++ b/arch/arm/crypto/sha256-armv4.pl
@@ -205,10 +205,11 @@ K256:
.global sha256_block_data_order
.type sha256_block_data_order,%function
sha256_block_data_order:
+.Lsha256_block_data_order:
#if __ARM_ARCH__<7
sub r3,pc,#8 @ sha256_block_data_order
#else
- adr r3,sha256_block_data_order
+ adr r3,.Lsha256_block_data_order
#endif
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
ldr r12,.LOPENSSL_armcap
diff --git a/arch/arm/crypto/sha256-core.S_shipped b/arch/arm/crypto/sha256-core.S_shipped
index 555a1a8eec90..72c248081d27 100644
--- a/arch/arm/crypto/sha256-core.S_shipped
+++ b/arch/arm/crypto/sha256-core.S_shipped
@@ -86,10 +86,11 @@ K256:
.global sha256_block_data_order
.type sha256_block_data_order,%function
sha256_block_data_order:
+.Lsha256_block_data_order:
#if __ARM_ARCH__<7
sub r3,pc,#8 @ sha256_block_data_order
#else
- adr r3,sha256_block_data_order
+ adr r3,.Lsha256_block_data_order
#endif
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
ldr r12,.LOPENSSL_armcap
diff --git a/arch/arm/crypto/sha512-armv4.pl b/arch/arm/crypto/sha512-armv4.pl
index a2b11a844357..5fe336420bcf 100644
--- a/arch/arm/crypto/sha512-armv4.pl
+++ b/arch/arm/crypto/sha512-armv4.pl
@@ -267,10 +267,11 @@ WORD64(0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817)
.global sha512_block_data_order
.type sha512_block_data_order,%function
sha512_block_data_order:
+.Lsha512_block_data_order:
#if __ARM_ARCH__<7
sub r3,pc,#8 @ sha512_block_data_order
#else
- adr r3,sha512_block_data_order
+ adr r3,.Lsha512_block_data_order
#endif
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
ldr r12,.LOPENSSL_armcap
diff --git a/arch/arm/crypto/sha512-core.S_shipped b/arch/arm/crypto/sha512-core.S_shipped
index 3694c4d4ca2b..de9bd7f55242 100644
--- a/arch/arm/crypto/sha512-core.S_shipped
+++ b/arch/arm/crypto/sha512-core.S_shipped
@@ -134,10 +134,11 @@ WORD64(0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817)
.global sha512_block_data_order
.type sha512_block_data_order,%function
sha512_block_data_order:
+.Lsha512_block_data_order:
#if __ARM_ARCH__<7
sub r3,pc,#8 @ sha512_block_data_order
#else
- adr r3,sha512_block_data_order
+ adr r3,.Lsha512_block_data_order
#endif
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
ldr r12,.LOPENSSL_armcap
diff --git a/arch/arm/kernel/patch.c b/arch/arm/kernel/patch.c
index 69bda1a5707e..1f665acaa6a9 100644
--- a/arch/arm/kernel/patch.c
+++ b/arch/arm/kernel/patch.c
@@ -15,7 +15,7 @@ struct patch {
unsigned int insn;
};
-static DEFINE_SPINLOCK(patch_lock);
+static DEFINE_RAW_SPINLOCK(patch_lock);
static void __kprobes *patch_map(void *addr, int fixmap, unsigned long *flags)
__acquires(&patch_lock)
@@ -32,7 +32,7 @@ static void __kprobes *patch_map(void *addr, int fixmap, unsigned long *flags)
return addr;
if (flags)
- spin_lock_irqsave(&patch_lock, *flags);
+ raw_spin_lock_irqsave(&patch_lock, *flags);
else
__acquire(&patch_lock);
@@ -47,7 +47,7 @@ static void __kprobes patch_unmap(int fixmap, unsigned long *flags)
clear_fixmap(fixmap);
if (flags)
- spin_unlock_irqrestore(&patch_lock, *flags);
+ raw_spin_unlock_irqrestore(&patch_lock, *flags);
else
__release(&patch_lock);
}
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index e8229b9fee4a..3265b8f86069 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -258,7 +258,7 @@ config S3C_PM_DEBUG_LED_SMDK
config SAMSUNG_PM_CHECK
bool "S3C2410 PM Suspend Memory CRC"
- depends on PM
+ depends on PM && (PLAT_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210)
select CRC32
help
Enable the PM code's memory area checksum over sleep. This option
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
index d39cfb2c6b63..311d0fad17e6 100644
--- a/arch/x86/kernel/cpu/cyrix.c
+++ b/arch/x86/kernel/cpu/cyrix.c
@@ -121,7 +121,7 @@ static void set_cx86_reorder(void)
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
/* Load/Store Serialize to mem access disable (=reorder it) */
- setCx86_old(CX86_PCR0, getCx86_old(CX86_PCR0) & ~0x80);
+ setCx86(CX86_PCR0, getCx86(CX86_PCR0) & ~0x80);
/* set load/store serialize from 1GB to 4GB */
ccr3 |= 0xe0;
setCx86(CX86_CCR3, ccr3);
@@ -132,11 +132,11 @@ static void set_cx86_memwb(void)
pr_info("Enable Memory-Write-back mode on Cyrix/NSC processor.\n");
/* CCR2 bit 2: unlock NW bit */
- setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) & ~0x04);
+ setCx86(CX86_CCR2, getCx86(CX86_CCR2) & ~0x04);
/* set 'Not Write-through' */
write_cr0(read_cr0() | X86_CR0_NW);
/* CCR2 bit 2: lock NW bit and set WT1 */
- setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) | 0x14);
+ setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14);
}
/*
@@ -150,14 +150,14 @@ static void geode_configure(void)
local_irq_save(flags);
/* Suspend on halt power saving and enable #SUSP pin */
- setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) | 0x88);
+ setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88);
ccr3 = getCx86(CX86_CCR3);
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
/* FPU fast, DTE cache, Mem bypass */
- setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x38);
+ setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x38);
setCx86(CX86_CCR3, ccr3); /* disable MAPEN */
set_cx86_memwb();
@@ -293,7 +293,7 @@ static void init_cyrix(struct cpuinfo_x86 *c)
/* GXm supports extended cpuid levels 'ala' AMD */
if (c->cpuid_level == 2) {
/* Enable cxMMX extensions (GX1 Datasheet 54) */
- setCx86_old(CX86_CCR7, getCx86_old(CX86_CCR7) | 1);
+ setCx86(CX86_CCR7, getCx86(CX86_CCR7) | 1);
/*
* GXm : 0x30 ... 0x5f GXm datasheet 51
@@ -316,7 +316,7 @@ static void init_cyrix(struct cpuinfo_x86 *c)
if (dir1 > 7) {
dir0_msn++; /* M II */
/* Enable MMX extensions (App note 108) */
- setCx86_old(CX86_CCR7, getCx86_old(CX86_CCR7)|1);
+ setCx86(CX86_CCR7, getCx86(CX86_CCR7)|1);
} else {
/* A 6x86MX - it has the bug. */
set_cpu_bug(c, X86_BUG_COMA);
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 756634f14df6..775c23d4021a 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -914,6 +914,8 @@ int __init hpet_enable(void)
return 0;
hpet_set_mapping();
+ if (!hpet_virt_address)
+ return 0;
/*
* Read the period and check for a sane value:
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index 8771766d46b6..9954a604a822 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -352,6 +352,7 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
#endif
default:
WARN_ON_ONCE(1);
+ return -EINVAL;
}
/*
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index ad0b13ad4bbb..4a76000bcf7a 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -443,9 +443,13 @@ static int acpi_ac_get_present(struct acpi_sbs *sbs)
/*
* The spec requires that bit 4 always be 1. If it's not set, assume
- * that the implementation doesn't support an SBS charger
+ * that the implementation doesn't support an SBS charger.
+ *
+ * And on some MacBooks a status of 0xffff is always returned, no
+ * matter whether the charger is plugged in or not, which is also
+ * wrong, so ignore the SBS charger for those too.
*/
- if (!((status >> 4) & 0x1))
+ if (!((status >> 4) & 0x1) || status == 0xffff)
return -ENODEV;
sbs->charger_present = (status >> 15) & 0x1;
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index fa0f66809503..d29f78441cdb 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -102,19 +102,29 @@ static int crb_recv(struct tpm_chip *chip, u8 *buf, size_t count)
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
unsigned int expected;
- /* sanity check */
- if (count < 6)
+ /* A sanity check that the upper layer wants to get at least the header
+ * as that is the minimum size for any TPM response.
+ */
+ if (count < TPM_HEADER_SIZE)
return -EIO;
+ /* If this bit is set, according to the spec, the TPM is in
+ * unrecoverable condition.
+ */
if (ioread32(&priv->cca->sts) & CRB_CTRL_STS_ERROR)
return -EIO;
- memcpy_fromio(buf, priv->rsp, 6);
- expected = be32_to_cpup((__be32 *) &buf[2]);
- if (expected > count || expected < 6)
+ /* Read the first 8 bytes in order to get the length of the response.
+ * We read exactly a quad word in order to make sure that the remaining
+ * reads will be aligned.
+ */
+ memcpy_fromio(buf, priv->rsp, 8);
+
+ expected = be32_to_cpup((__be32 *)&buf[2]);
+ if (expected > count || expected < TPM_HEADER_SIZE)
return -EIO;
- memcpy_fromio(&buf[6], &priv->rsp[6], expected - 6);
+ memcpy_fromio(&buf[8], &priv->rsp[8], expected - 8);
return expected;
}
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 7a6305884f97..32d22bdf7164 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -774,6 +774,9 @@ static int pxa_gpio_suspend(void)
struct pxa_gpio_bank *c;
int gpio;
+ if (!pchip)
+ return 0;
+
for_each_gpio_bank(gpio, c, pchip) {
c->saved_gplr = readl_relaxed(c->regbase + GPLR_OFFSET);
c->saved_gpdr = readl_relaxed(c->regbase + GPDR_OFFSET);
@@ -792,6 +795,9 @@ static void pxa_gpio_resume(void)
struct pxa_gpio_bank *c;
int gpio;
+ if (!pchip)
+ return;
+
for_each_gpio_bank(gpio, c, pchip) {
/* restore level with set/clear */
writel_relaxed(c->saved_gplr, c->regbase + GPSR_OFFSET);
diff --git a/drivers/hid/i2c-hid/Makefile b/drivers/hid/i2c-hid/Makefile
index 832d8f9aaba2..099e1ce2f234 100644
--- a/drivers/hid/i2c-hid/Makefile
+++ b/drivers/hid/i2c-hid/Makefile
@@ -3,3 +3,6 @@
#
obj-$(CONFIG_I2C_HID) += i2c-hid.o
+
+i2c-hid-objs = i2c-hid-core.o
+i2c-hid-$(CONFIG_DMI) += i2c-hid-dmi-quirks.o
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
new file mode 100644
index 000000000000..850527d5fab1
--- /dev/null
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -0,0 +1,1359 @@
+/*
+ * HID over I2C protocol implementation
+ *
+ * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@...il.com>
+ * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
+ * Copyright (c) 2012 Red Hat, Inc
+ *
+ * This code is partly based on "USB HID support for Linux":
+ *
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@...e.cz>
+ * Copyright (c) 2005 Michael Haboustak <mike-@...ci.rr.com> for Concept2, Inc
+ * Copyright (c) 2007-2008 Oliver Neukum
+ * Copyright (c) 2006-2010 Jiri Kosina
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/device.h>
+#include <linux/wait.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/hid.h>
+#include <linux/mutex.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
+#include <linux/gpio/consumer.h>
+
+#include <linux/i2c/i2c-hid.h>
+
+#include "../hid-ids.h"
+#include "i2c-hid.h"
+
+/* quirks to control the device */
+#define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV BIT(0)
+
+/* flags */
+#define I2C_HID_STARTED 0
+#define I2C_HID_RESET_PENDING 1
+#define I2C_HID_READ_PENDING 2
+
+#define I2C_HID_PWR_ON 0x00
+#define I2C_HID_PWR_SLEEP 0x01
+
+/* debug option */
+static bool debug;
+module_param(debug, bool, 0444);
+MODULE_PARM_DESC(debug, "print a lot of debug information");
+
+#define i2c_hid_dbg(ihid, fmt, arg...) \
+do { \
+ if (debug) \
+ dev_printk(KERN_DEBUG, &(ihid)->client->dev, fmt, ##arg); \
+} while (0)
+
+struct i2c_hid_desc {
+ __le16 wHIDDescLength;
+ __le16 bcdVersion;
+ __le16 wReportDescLength;
+ __le16 wReportDescRegister;
+ __le16 wInputRegister;
+ __le16 wMaxInputLength;
+ __le16 wOutputRegister;
+ __le16 wMaxOutputLength;
+ __le16 wCommandRegister;
+ __le16 wDataRegister;
+ __le16 wVendorID;
+ __le16 wProductID;
+ __le16 wVersionID;
+ __le32 reserved;
+} __packed;
+
+struct i2c_hid_cmd {
+ unsigned int registerIndex;
+ __u8 opcode;
+ unsigned int length;
+ bool wait;
+};
+
+union command {
+ u8 data[0];
+ struct cmd {
+ __le16 reg;
+ __u8 reportTypeID;
+ __u8 opcode;
+ } __packed c;
+};
+
+#define I2C_HID_CMD(opcode_) \
+ .opcode = opcode_, .length = 4, \
+ .registerIndex = offsetof(struct i2c_hid_desc, wCommandRegister)
+
+/* fetch HID descriptor */
+static const struct i2c_hid_cmd hid_descr_cmd = { .length = 2 };
+/* fetch report descriptors */
+static const struct i2c_hid_cmd hid_report_descr_cmd = {
+ .registerIndex = offsetof(struct i2c_hid_desc,
+ wReportDescRegister),
+ .opcode = 0x00,
+ .length = 2 };
+/* commands */
+static const struct i2c_hid_cmd hid_reset_cmd = { I2C_HID_CMD(0x01),
+ .wait = true };
+static const struct i2c_hid_cmd hid_get_report_cmd = { I2C_HID_CMD(0x02) };
+static const struct i2c_hid_cmd hid_set_report_cmd = { I2C_HID_CMD(0x03) };
+static const struct i2c_hid_cmd hid_set_power_cmd = { I2C_HID_CMD(0x08) };
+static const struct i2c_hid_cmd hid_no_cmd = { .length = 0 };
+
+/*
+ * These definitions are not used here, but are defined by the spec.
+ * Keeping them here for documentation purposes.
+ *
+ * static const struct i2c_hid_cmd hid_get_idle_cmd = { I2C_HID_CMD(0x04) };
+ * static const struct i2c_hid_cmd hid_set_idle_cmd = { I2C_HID_CMD(0x05) };
+ * static const struct i2c_hid_cmd hid_get_protocol_cmd = { I2C_HID_CMD(0x06) };
+ * static const struct i2c_hid_cmd hid_set_protocol_cmd = { I2C_HID_CMD(0x07) };
+ */
+
+static DEFINE_MUTEX(i2c_hid_open_mut);
+
+/* The main device structure */
+struct i2c_hid {
+ struct i2c_client *client; /* i2c client */
+ struct hid_device *hid; /* pointer to corresponding HID dev */
+ union {
+ __u8 hdesc_buffer[sizeof(struct i2c_hid_desc)];
+ struct i2c_hid_desc hdesc; /* the HID Descriptor */
+ };
+ __le16 wHIDDescRegister; /* location of the i2c
+ * register of the HID
+ * descriptor. */
+ unsigned int bufsize; /* i2c buffer size */
+ u8 *inbuf; /* Input buffer */
+ u8 *rawbuf; /* Raw Input buffer */
+ u8 *cmdbuf; /* Command buffer */
+ u8 *argsbuf; /* Command arguments buffer */
+
+ unsigned long flags; /* device flags */
+ unsigned long quirks; /* Various quirks */
+
+ wait_queue_head_t wait; /* For waiting the interrupt */
+ struct gpio_desc *desc;
+ int irq;
+
+ struct i2c_hid_platform_data pdata;
+
+ bool irq_wake_enabled;
+ struct mutex reset_lock;
+};
+
+static const struct i2c_hid_quirks {
+ __u16 idVendor;
+ __u16 idProduct;
+ __u32 quirks;
+} i2c_hid_quirks[] = {
+ { USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8752,
+ I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
+ { USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8755,
+ I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
+ { 0, 0 }
+};
+
+/*
+ * i2c_hid_lookup_quirk: return any quirks associated with a I2C HID device
+ * @idVendor: the 16-bit vendor ID
+ * @idProduct: the 16-bit product ID
+ *
+ * Returns: a u32 quirks value.
+ */
+static u32 i2c_hid_lookup_quirk(const u16 idVendor, const u16 idProduct)
+{
+ u32 quirks = 0;
+ int n;
+
+ for (n = 0; i2c_hid_quirks[n].idVendor; n++)
+ if (i2c_hid_quirks[n].idVendor == idVendor &&
+ (i2c_hid_quirks[n].idProduct == (__u16)HID_ANY_ID ||
+ i2c_hid_quirks[n].idProduct == idProduct))
+ quirks = i2c_hid_quirks[n].quirks;
+
+ return quirks;
+}
+
+static int __i2c_hid_command(struct i2c_client *client,
+ const struct i2c_hid_cmd *command, u8 reportID,
+ u8 reportType, u8 *args, int args_len,
+ unsigned char *buf_recv, int data_len)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ union command *cmd = (union command *)ihid->cmdbuf;
+ int ret;
+ struct i2c_msg msg[2];
+ int msg_num = 1;
+
+ int length = command->length;
+ bool wait = command->wait;
+ unsigned int registerIndex = command->registerIndex;
+
+ /* special case for hid_descr_cmd */
+ if (command == &hid_descr_cmd) {
+ cmd->c.reg = ihid->wHIDDescRegister;
+ } else {
+ cmd->data[0] = ihid->hdesc_buffer[registerIndex];
+ cmd->data[1] = ihid->hdesc_buffer[registerIndex + 1];
+ }
+
+ if (length > 2) {
+ cmd->c.opcode = command->opcode;
+ cmd->c.reportTypeID = reportID | reportType << 4;
+ }
+
+ memcpy(cmd->data + length, args, args_len);
+ length += args_len;
+
+ i2c_hid_dbg(ihid, "%s: cmd=%*ph\n", __func__, length, cmd->data);
+
+ msg[0].addr = client->addr;
+ msg[0].flags = client->flags & I2C_M_TEN;
+ msg[0].len = length;
+ msg[0].buf = cmd->data;
+ if (data_len > 0) {
+ msg[1].addr = client->addr;
+ msg[1].flags = client->flags & I2C_M_TEN;
+ msg[1].flags |= I2C_M_RD;
+ msg[1].len = data_len;
+ msg[1].buf = buf_recv;
+ msg_num = 2;
+ set_bit(I2C_HID_READ_PENDING, &ihid->flags);
+ }
+
+ if (wait)
+ set_bit(I2C_HID_RESET_PENDING, &ihid->flags);
+
+ ret = i2c_transfer(client->adapter, msg, msg_num);
+
+ if (data_len > 0)
+ clear_bit(I2C_HID_READ_PENDING, &ihid->flags);
+
+ if (ret != msg_num)
+ return ret < 0 ? ret : -EIO;
+
+ ret = 0;
+
+ if (wait) {
+ i2c_hid_dbg(ihid, "%s: waiting...\n", __func__);
+ if (!wait_event_timeout(ihid->wait,
+ !test_bit(I2C_HID_RESET_PENDING, &ihid->flags),
+ msecs_to_jiffies(5000)))
+ ret = -ENODATA;
+ i2c_hid_dbg(ihid, "%s: finished.\n", __func__);
+ }
+
+ return ret;
+}
+
+static int i2c_hid_command(struct i2c_client *client,
+ const struct i2c_hid_cmd *command,
+ unsigned char *buf_recv, int data_len)
+{
+ return __i2c_hid_command(client, command, 0, 0, NULL, 0,
+ buf_recv, data_len);
+}
+
+static int i2c_hid_get_report(struct i2c_client *client, u8 reportType,
+ u8 reportID, unsigned char *buf_recv, int data_len)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ u8 args[3];
+ int ret;
+ int args_len = 0;
+ u16 readRegister = le16_to_cpu(ihid->hdesc.wDataRegister);
+
+ i2c_hid_dbg(ihid, "%s\n", __func__);
+
+ if (reportID >= 0x0F) {
+ args[args_len++] = reportID;
+ reportID = 0x0F;
+ }
+
+ args[args_len++] = readRegister & 0xFF;
+ args[args_len++] = readRegister >> 8;
+
+ ret = __i2c_hid_command(client, &hid_get_report_cmd, reportID,
+ reportType, args, args_len, buf_recv, data_len);
+ if (ret) {
+ dev_err(&client->dev,
+ "failed to retrieve report from device.\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * i2c_hid_set_or_send_report: forward an incoming report to the device
+ * @client: the i2c_client of the device
+ * @reportType: 0x03 for HID_FEATURE_REPORT ; 0x02 for HID_OUTPUT_REPORT
+ * @reportID: the report ID
+ * @buf: the actual data to transfer, without the report ID
+ * @len: size of buf
+ * @use_data: true: use SET_REPORT HID command, false: send plain OUTPUT report
+ */
+static int i2c_hid_set_or_send_report(struct i2c_client *client, u8 reportType,
+ u8 reportID, unsigned char *buf, size_t data_len, bool use_data)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ u8 *args = ihid->argsbuf;
+ const struct i2c_hid_cmd *hidcmd;
+ int ret;
+ u16 dataRegister = le16_to_cpu(ihid->hdesc.wDataRegister);
+ u16 outputRegister = le16_to_cpu(ihid->hdesc.wOutputRegister);
+ u16 maxOutputLength = le16_to_cpu(ihid->hdesc.wMaxOutputLength);
+ u16 size;
+ int args_len;
+ int index = 0;
+
+ i2c_hid_dbg(ihid, "%s\n", __func__);
+
+ if (data_len > ihid->bufsize)
+ return -EINVAL;
+
+ size = 2 /* size */ +
+ (reportID ? 1 : 0) /* reportID */ +
+ data_len /* buf */;
+ args_len = (reportID >= 0x0F ? 1 : 0) /* optional third byte */ +
+ 2 /* dataRegister */ +
+ size /* args */;
+
+ if (!use_data && maxOutputLength == 0)
+ return -ENOSYS;
+
+ if (reportID >= 0x0F) {
+ args[index++] = reportID;
+ reportID = 0x0F;
+ }
+
+ /*
+ * use the data register for feature reports or if the device does not
+ * support the output register
+ */
+ if (use_data) {
+ args[index++] = dataRegister & 0xFF;
+ args[index++] = dataRegister >> 8;
+ hidcmd = &hid_set_report_cmd;
+ } else {
+ args[index++] = outputRegister & 0xFF;
+ args[index++] = outputRegister >> 8;
+ hidcmd = &hid_no_cmd;
+ }
+
+ args[index++] = size & 0xFF;
+ args[index++] = size >> 8;
+
+ if (reportID)
+ args[index++] = reportID;
+
+ memcpy(&args[index], buf, data_len);
+
+ ret = __i2c_hid_command(client, hidcmd, reportID,
+ reportType, args, args_len, NULL, 0);
+ if (ret) {
+ dev_err(&client->dev, "failed to set a report to device.\n");
+ return ret;
+ }
+
+ return data_len;
+}
+
+static int i2c_hid_set_power(struct i2c_client *client, int power_state)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int ret;
+
+ i2c_hid_dbg(ihid, "%s\n", __func__);
+
+ /*
+ * Some devices require to send a command to wakeup before power on.
+ * The call will get a return value (EREMOTEIO) but device will be
+ * triggered and activated. After that, it goes like a normal device.
+ */
+ if (power_state == I2C_HID_PWR_ON &&
+ ihid->quirks & I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV) {
+ ret = i2c_hid_command(client, &hid_set_power_cmd, NULL, 0);
+
+ /* Device was already activated */
+ if (!ret)
+ goto set_pwr_exit;
+ }
+
+ ret = __i2c_hid_command(client, &hid_set_power_cmd, power_state,
+ 0, NULL, 0, NULL, 0);
+
+ if (ret)
+ dev_err(&client->dev, "failed to change power setting.\n");
+
+set_pwr_exit:
+ return ret;
+}
+
+static int i2c_hid_hwreset(struct i2c_client *client)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int ret;
+
+ i2c_hid_dbg(ihid, "%s\n", __func__);
+
+ /*
+ * This prevents sending feature reports while the device is
+ * being reset. Otherwise we may lose the reset complete
+ * interrupt.
+ */
+ mutex_lock(&ihid->reset_lock);
+
+ ret = i2c_hid_set_power(client, I2C_HID_PWR_ON);
+ if (ret)
+ goto out_unlock;
+
+ /*
+ * The HID over I2C specification states that if a DEVICE needs time
+ * after the PWR_ON request, it should utilise CLOCK stretching.
+ * However, it has been observered that the Windows driver provides a
+ * 1ms sleep between the PWR_ON and RESET requests and that some devices
+ * rely on this.
+ */
+ usleep_range(1000, 5000);
+
+ i2c_hid_dbg(ihid, "resetting...\n");
+
+ ret = i2c_hid_command(client, &hid_reset_cmd, NULL, 0);
+ if (ret) {
+ dev_err(&client->dev, "failed to reset device.\n");
+ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
+ }
+
+out_unlock:
+ mutex_unlock(&ihid->reset_lock);
+ return ret;
+}
+
+static void i2c_hid_get_input(struct i2c_hid *ihid)
+{
+ int ret;
+ u32 ret_size;
+ int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
+
+ if (size > ihid->bufsize)
+ size = ihid->bufsize;
+
+ ret = i2c_master_recv(ihid->client, ihid->inbuf, size);
+ if (ret != size) {
+ if (ret < 0)
+ return;
+
+ dev_err(&ihid->client->dev, "%s: got %d data instead of %d\n",
+ __func__, ret, size);
+ return;
+ }
+
+ ret_size = ihid->inbuf[0] | ihid->inbuf[1] << 8;
+
+ if (!ret_size) {
+ /* host or device initiated RESET completed */
+ if (test_and_clear_bit(I2C_HID_RESET_PENDING, &ihid->flags))
+ wake_up(&ihid->wait);
+ return;
+ }
+
+ if ((ret_size > size) || (ret_size < 2)) {
+ dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
+ __func__, size, ret_size);
+ return;
+ }
+
+ i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);
+
+ if (test_bit(I2C_HID_STARTED, &ihid->flags))
+ hid_input_report(ihid->hid, HID_INPUT_REPORT, ihid->inbuf + 2,
+ ret_size - 2, 1);
+
+ return;
+}
+
+static irqreturn_t i2c_hid_irq(int irq, void *dev_id)
+{
+ struct i2c_hid *ihid = dev_id;
+
+ if (test_bit(I2C_HID_READ_PENDING, &ihid->flags))
+ return IRQ_HANDLED;
+
+ i2c_hid_get_input(ihid);
+
+ return IRQ_HANDLED;
+}
+
+static int i2c_hid_get_report_length(struct hid_report *report)
+{
+ return ((report->size - 1) >> 3) + 1 +
+ report->device->report_enum[report->type].numbered + 2;
+}
+
+static void i2c_hid_init_report(struct hid_report *report, u8 *buffer,
+ size_t bufsize)
+{
+ struct hid_device *hid = report->device;
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ unsigned int size, ret_size;
+
+ size = i2c_hid_get_report_length(report);
+ if (i2c_hid_get_report(client,
+ report->type == HID_FEATURE_REPORT ? 0x03 : 0x01,
+ report->id, buffer, size))
+ return;
+
+ i2c_hid_dbg(ihid, "report (len=%d): %*ph\n", size, size, buffer);
+
+ ret_size = buffer[0] | (buffer[1] << 8);
+
+ if (ret_size != size) {
+ dev_err(&client->dev, "error in %s size:%d / ret_size:%d\n",
+ __func__, size, ret_size);
+ return;
+ }
+
+ /* hid->driver_lock is held as we are in probe function,
+ * we just need to setup the input fields, so using
+ * hid_report_raw_event is safe. */
+ hid_report_raw_event(hid, report->type, buffer + 2, size - 2, 1);
+}
+
+/*
+ * Initialize all reports
+ */
+static void i2c_hid_init_reports(struct hid_device *hid)
+{
+ struct hid_report *report;
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ u8 *inbuf = kzalloc(ihid->bufsize, GFP_KERNEL);
+
+ if (!inbuf) {
+ dev_err(&client->dev, "can not retrieve initial reports\n");
+ return;
+ }
+
+ /*
+ * The device must be powered on while we fetch initial reports
+ * from it.
+ */
+ pm_runtime_get_sync(&client->dev);
+
+ list_for_each_entry(report,
+ &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
+ i2c_hid_init_report(report, inbuf, ihid->bufsize);
+
+ pm_runtime_put(&client->dev);
+
+ kfree(inbuf);
+}
+
+/*
+ * Traverse the supplied list of reports and find the longest
+ */
+static void i2c_hid_find_max_report(struct hid_device *hid, unsigned int type,
+ unsigned int *max)
+{
+ struct hid_report *report;
+ unsigned int size;
+
+ /* We should not rely on wMaxInputLength, as some devices may set it to
+ * a wrong length. */
+ list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
+ size = i2c_hid_get_report_length(report);
+ if (*max < size)
+ *max = size;
+ }
+}
+
+static void i2c_hid_free_buffers(struct i2c_hid *ihid)
+{
+ kfree(ihid->inbuf);
+ kfree(ihid->rawbuf);
+ kfree(ihid->argsbuf);
+ kfree(ihid->cmdbuf);
+ ihid->inbuf = NULL;
+ ihid->rawbuf = NULL;
+ ihid->cmdbuf = NULL;
+ ihid->argsbuf = NULL;
+ ihid->bufsize = 0;
+}
+
+static int i2c_hid_alloc_buffers(struct i2c_hid *ihid, size_t report_size)
+{
+ /* the worst case is computed from the set_report command with a
+ * reportID > 15 and the maximum report length */
+ int args_len = sizeof(__u8) + /* ReportID */
+ sizeof(__u8) + /* optional ReportID byte */
+ sizeof(__u16) + /* data register */
+ sizeof(__u16) + /* size of the report */
+ report_size; /* report */
+
+ ihid->inbuf = kzalloc(report_size, GFP_KERNEL);
+ ihid->rawbuf = kzalloc(report_size, GFP_KERNEL);
+ ihid->argsbuf = kzalloc(args_len, GFP_KERNEL);
+ ihid->cmdbuf = kzalloc(sizeof(union command) + args_len, GFP_KERNEL);
+
+ if (!ihid->inbuf || !ihid->rawbuf || !ihid->argsbuf || !ihid->cmdbuf) {
+ i2c_hid_free_buffers(ihid);
+ return -ENOMEM;
+ }
+
+ ihid->bufsize = report_size;
+
+ return 0;
+}
+
+static int i2c_hid_get_raw_report(struct hid_device *hid,
+ unsigned char report_number, __u8 *buf, size_t count,
+ unsigned char report_type)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ size_t ret_count, ask_count;
+ int ret;
+
+ if (report_type == HID_OUTPUT_REPORT)
+ return -EINVAL;
+
+ /* +2 bytes to include the size of the reply in the query buffer */
+ ask_count = min(count + 2, (size_t)ihid->bufsize);
+
+ ret = i2c_hid_get_report(client,
+ report_type == HID_FEATURE_REPORT ? 0x03 : 0x01,
+ report_number, ihid->rawbuf, ask_count);
+
+ if (ret < 0)
+ return ret;
+
+ ret_count = ihid->rawbuf[0] | (ihid->rawbuf[1] << 8);
+
+ if (ret_count <= 2)
+ return 0;
+
+ ret_count = min(ret_count, ask_count);
+
+ /* The query buffer contains the size, dropping it in the reply */
+ count = min(count, ret_count - 2);
+ memcpy(buf, ihid->rawbuf + 2, count);
+
+ return count;
+}
+
+static int i2c_hid_output_raw_report(struct hid_device *hid, __u8 *buf,
+ size_t count, unsigned char report_type, bool use_data)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int report_id = buf[0];
+ int ret;
+
+ if (report_type == HID_INPUT_REPORT)
+ return -EINVAL;
+
+ mutex_lock(&ihid->reset_lock);
+
+ if (report_id) {
+ buf++;
+ count--;
+ }
+
+ ret = i2c_hid_set_or_send_report(client,
+ report_type == HID_FEATURE_REPORT ? 0x03 : 0x02,
+ report_id, buf, count, use_data);
+
+ if (report_id && ret >= 0)
+ ret++; /* add report_id to the number of transfered bytes */
+
+ mutex_unlock(&ihid->reset_lock);
+
+ return ret;
+}
+
+static int i2c_hid_output_report(struct hid_device *hid, __u8 *buf,
+ size_t count)
+{
+ return i2c_hid_output_raw_report(hid, buf, count, HID_OUTPUT_REPORT,
+ false);
+}
+
+static int i2c_hid_raw_request(struct hid_device *hid, unsigned char reportnum,
+ __u8 *buf, size_t len, unsigned char rtype,
+ int reqtype)
+{
+ switch (reqtype) {
+ case HID_REQ_GET_REPORT:
+ return i2c_hid_get_raw_report(hid, reportnum, buf, len, rtype);
+ case HID_REQ_SET_REPORT:
+ if (buf[0] != reportnum)
+ return -EINVAL;
+ return i2c_hid_output_raw_report(hid, buf, len, rtype, true);
+ default:
+ return -EIO;
+ }
+}
+
+static int i2c_hid_parse(struct hid_device *hid)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ struct i2c_hid_desc *hdesc = &ihid->hdesc;
+ unsigned int rsize;
+ char *rdesc;
+ int ret;
+ int tries = 3;
+ char *use_override;
+
+ i2c_hid_dbg(ihid, "entering %s\n", __func__);
+
+ rsize = le16_to_cpu(hdesc->wReportDescLength);
+ if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
+ dbg_hid("weird size of report descriptor (%u)\n", rsize);
+ return -EINVAL;
+ }
+
+ do {
+ ret = i2c_hid_hwreset(client);
+ if (ret)
+ msleep(1000);
+ } while (tries-- > 0 && ret);
+
+ if (ret)
+ return ret;
+
+ use_override = i2c_hid_get_dmi_hid_report_desc_override(client->name,
+ &rsize);
+
+ if (use_override) {
+ rdesc = use_override;
+ i2c_hid_dbg(ihid, "Using a HID report descriptor override\n");
+ } else {
+ rdesc = kzalloc(rsize, GFP_KERNEL);
+
+ if (!rdesc) {
+ dbg_hid("couldn't allocate rdesc memory\n");
+ return -ENOMEM;
+ }
+
+ i2c_hid_dbg(ihid, "asking HID report descriptor\n");
+
+ ret = i2c_hid_command(client, &hid_report_descr_cmd,
+ rdesc, rsize);
+ if (ret) {
+ hid_err(hid, "reading report descriptor failed\n");
+ kfree(rdesc);
+ return -EIO;
+ }
+ }
+
+ i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);
+
+ ret = hid_parse_report(hid, rdesc, rsize);
+ if (!use_override)
+ kfree(rdesc);
+
+ if (ret) {
+ dbg_hid("parsing report descriptor failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int i2c_hid_start(struct hid_device *hid)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int ret;
+ unsigned int bufsize = HID_MIN_BUFFER_SIZE;
+
+ i2c_hid_find_max_report(hid, HID_INPUT_REPORT, &bufsize);
+ i2c_hid_find_max_report(hid, HID_OUTPUT_REPORT, &bufsize);
+ i2c_hid_find_max_report(hid, HID_FEATURE_REPORT, &bufsize);
+
+ if (bufsize > ihid->bufsize) {
+ i2c_hid_free_buffers(ihid);
+
+ ret = i2c_hid_alloc_buffers(ihid, bufsize);
+
+ if (ret)
+ return ret;
+ }
+
+ if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS))
+ i2c_hid_init_reports(hid);
+
+ return 0;
+}
+
+static void i2c_hid_stop(struct hid_device *hid)
+{
+ hid->claimed = 0;
+}
+
+static int i2c_hid_open(struct hid_device *hid)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int ret = 0;
+
+ mutex_lock(&i2c_hid_open_mut);
+ if (!hid->open++) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ hid->open--;
+ goto done;
+ }
+ set_bit(I2C_HID_STARTED, &ihid->flags);
+ }
+done:
+ mutex_unlock(&i2c_hid_open_mut);
+ return ret < 0 ? ret : 0;
+}
+
+static void i2c_hid_close(struct hid_device *hid)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+
+ /* protecting hid->open to make sure we don't restart
+ * data acquistion due to a resumption we no longer
+ * care about
+ */
+ mutex_lock(&i2c_hid_open_mut);
+ if (!--hid->open) {
+ clear_bit(I2C_HID_STARTED, &ihid->flags);
+
+ /* Save some power */
+ pm_runtime_put(&client->dev);
+ }
+ mutex_unlock(&i2c_hid_open_mut);
+}
+
+static int i2c_hid_power(struct hid_device *hid, int lvl)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+
+ i2c_hid_dbg(ihid, "%s lvl:%d\n", __func__, lvl);
+
+ switch (lvl) {
+ case PM_HINT_FULLON:
+ pm_runtime_get_sync(&client->dev);
+ break;
+ case PM_HINT_NORMAL:
+ pm_runtime_put(&client->dev);
+ break;
+ }
+ return 0;
+}
+
+static struct hid_ll_driver i2c_hid_ll_driver = {
+ .parse = i2c_hid_parse,
+ .start = i2c_hid_start,
+ .stop = i2c_hid_stop,
+ .open = i2c_hid_open,
+ .close = i2c_hid_close,
+ .power = i2c_hid_power,
+ .output_report = i2c_hid_output_report,
+ .raw_request = i2c_hid_raw_request,
+};
+
+static int i2c_hid_init_irq(struct i2c_client *client)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ int ret;
+
+ dev_dbg(&client->dev, "Requesting IRQ: %d\n", ihid->irq);
+
+ ret = request_threaded_irq(ihid->irq, NULL, i2c_hid_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ client->name, ihid);
+ if (ret < 0) {
+ dev_warn(&client->dev,
+ "Could not register for %s interrupt, irq = %d,"
+ " ret = %d\n",
+ client->name, ihid->irq, ret);
+
+ return ret;
+ }
+
+ return 0;
+}
+
+static int i2c_hid_fetch_hid_descriptor(struct i2c_hid *ihid)
+{
+ struct i2c_client *client = ihid->client;
+ struct i2c_hid_desc *hdesc = &ihid->hdesc;
+ unsigned int dsize;
+ int ret;
+
+ /* i2c hid fetch using a fixed descriptor size (30 bytes) */
+ if (i2c_hid_get_dmi_i2c_hid_desc_override(client->name)) {
+ i2c_hid_dbg(ihid, "Using a HID descriptor override\n");
+ ihid->hdesc =
+ *i2c_hid_get_dmi_i2c_hid_desc_override(client->name);
+ } else {
+ i2c_hid_dbg(ihid, "Fetching the HID descriptor\n");
+ ret = i2c_hid_command(client, &hid_descr_cmd,
+ ihid->hdesc_buffer,
+ sizeof(struct i2c_hid_desc));
+ if (ret) {
+ dev_err(&client->dev, "hid_descr_cmd failed\n");
+ return -ENODEV;
+ }
+ }
+
+ /* Validate the length of HID descriptor, the 4 first bytes:
+ * bytes 0-1 -> length
+ * bytes 2-3 -> bcdVersion (has to be 1.00) */
+ /* check bcdVersion == 1.0 */
+ if (le16_to_cpu(hdesc->bcdVersion) != 0x0100) {
+ dev_err(&client->dev,
+ "unexpected HID descriptor bcdVersion (0x%04hx)\n",
+ le16_to_cpu(hdesc->bcdVersion));
+ return -ENODEV;
+ }
+
+ /* Descriptor length should be 30 bytes as per the specification */
+ dsize = le16_to_cpu(hdesc->wHIDDescLength);
+ if (dsize != sizeof(struct i2c_hid_desc)) {
+ dev_err(&client->dev, "weird size of HID descriptor (%u)\n",
+ dsize);
+ return -ENODEV;
+ }
+ i2c_hid_dbg(ihid, "HID Descriptor: %*ph\n", dsize, ihid->hdesc_buffer);
+ return 0;
+}
+
+#ifdef CONFIG_ACPI
+
+/* Default GPIO mapping */
+static const struct acpi_gpio_params i2c_hid_irq_gpio = { 0, 0, true };
+static const struct acpi_gpio_mapping i2c_hid_acpi_gpios[] = {
+ { "gpios", &i2c_hid_irq_gpio, 1 },
+ { },
+};
+
+static int i2c_hid_acpi_pdata(struct i2c_client *client,
+ struct i2c_hid_platform_data *pdata)
+{
+ static u8 i2c_hid_guid[] = {
+ 0xF7, 0xF6, 0xDF, 0x3C, 0x67, 0x42, 0x55, 0x45,
+ 0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE,
+ };
+ union acpi_object *obj;
+ struct acpi_device *adev;
+ acpi_handle handle;
+ int ret;
+
+ handle = ACPI_HANDLE(&client->dev);
+ if (!handle || acpi_bus_get_device(handle, &adev))
+ return -ENODEV;
+
+ obj = acpi_evaluate_dsm_typed(handle, i2c_hid_guid, 1, 1, NULL,
+ ACPI_TYPE_INTEGER);
+ if (!obj) {
+ dev_err(&client->dev, "device _DSM execution failed\n");
+ return -ENODEV;
+ }
+
+ pdata->hid_descriptor_address = obj->integer.value;
+ ACPI_FREE(obj);
+
+ /* GPIOs are optional */
+ ret = acpi_dev_add_driver_gpios(adev, i2c_hid_acpi_gpios);
+ return ret < 0 && ret != -ENXIO ? ret : 0;
+}
+
+static void i2c_hid_acpi_fix_up_power(struct device *dev)
+{
+ acpi_handle handle = ACPI_HANDLE(dev);
+ struct acpi_device *adev;
+
+ if (handle && acpi_bus_get_device(handle, &adev) == 0)
+ acpi_device_fix_up_power(adev);
+}
+
+static const struct acpi_device_id i2c_hid_acpi_match[] = {
+ {"ACPI0C50", 0 },
+ {"PNP0C50", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, i2c_hid_acpi_match);
+#else
+static inline int i2c_hid_acpi_pdata(struct i2c_client *client,
+ struct i2c_hid_platform_data *pdata)
+{
+ return -ENODEV;
+}
+
+static inline void i2c_hid_acpi_fix_up_power(struct device *dev) {}
+#endif
+
+#ifdef CONFIG_OF
+static int i2c_hid_of_probe(struct i2c_client *client,
+ struct i2c_hid_platform_data *pdata)
+{
+ struct device *dev = &client->dev;
+ u32 val;
+ int ret;
+
+ ret = of_property_read_u32(dev->of_node, "hid-descr-addr", &val);
+ if (ret) {
+ dev_err(&client->dev, "HID register address not provided\n");
+ return -ENODEV;
+ }
+ if (val >> 16) {
+ dev_err(&client->dev, "Bad HID register address: 0x%08x\n",
+ val);
+ return -EINVAL;
+ }
+ pdata->hid_descriptor_address = val;
+
+ return 0;
+}
+
+static const struct of_device_id i2c_hid_of_match[] = {
+ { .compatible = "hid-over-i2c" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, i2c_hid_of_match);
+#else
+static inline int i2c_hid_of_probe(struct i2c_client *client,
+ struct i2c_hid_platform_data *pdata)
+{
+ return -ENODEV;
+}
+#endif
+
+static int i2c_hid_probe(struct i2c_client *client,
+ const struct i2c_device_id *dev_id)
+{
+ int ret;
+ struct i2c_hid *ihid;
+ struct hid_device *hid;
+ __u16 hidRegister;
+ struct i2c_hid_platform_data *platform_data = client->dev.platform_data;
+
+ dbg_hid("HID probe called for i2c 0x%02x\n", client->addr);
+
+ ihid = kzalloc(sizeof(struct i2c_hid), GFP_KERNEL);
+ if (!ihid)
+ return -ENOMEM;
+
+ if (client->dev.of_node) {
+ ret = i2c_hid_of_probe(client, &ihid->pdata);
+ if (ret)
+ goto err;
+ } else if (!platform_data) {
+ ret = i2c_hid_acpi_pdata(client, &ihid->pdata);
+ if (ret) {
+ dev_err(&client->dev,
+ "HID register address not provided\n");
+ goto err;
+ }
+ } else {
+ ihid->pdata = *platform_data;
+ }
+
+ if (client->irq > 0) {
+ ihid->irq = client->irq;
+ } else if (ACPI_COMPANION(&client->dev)) {
+ ihid->desc = gpiod_get(&client->dev, NULL, GPIOD_IN);
+ if (IS_ERR(ihid->desc)) {
+ dev_err(&client->dev, "Failed to get GPIO interrupt\n");
+ return PTR_ERR(ihid->desc);
+ }
+
+ ihid->irq = gpiod_to_irq(ihid->desc);
+ if (ihid->irq < 0) {
+ gpiod_put(ihid->desc);
+ dev_err(&client->dev, "Failed to convert GPIO to IRQ\n");
+ return ihid->irq;
+ }
+ }
+
+ i2c_set_clientdata(client, ihid);
+
+ ihid->client = client;
+
+ hidRegister = ihid->pdata.hid_descriptor_address;
+ ihid->wHIDDescRegister = cpu_to_le16(hidRegister);
+
+ init_waitqueue_head(&ihid->wait);
+ mutex_init(&ihid->reset_lock);
+
+ /* we need to allocate the command buffer without knowing the maximum
+ * size of the reports. Let's use HID_MIN_BUFFER_SIZE, then we do the
+ * real computation later. */
+ ret = i2c_hid_alloc_buffers(ihid, HID_MIN_BUFFER_SIZE);
+ if (ret < 0)
+ goto err;
+
+ i2c_hid_acpi_fix_up_power(&client->dev);
+
+ pm_runtime_get_noresume(&client->dev);
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_enable(&client->dev);
+ device_enable_async_suspend(&client->dev);
+
+ /* Make sure there is something at this address */
+ ret = i2c_smbus_read_byte(client);
+ if (ret < 0) {
+ dev_dbg(&client->dev, "nothing at this address: %d\n", ret);
+ ret = -ENXIO;
+ goto err_pm;
+ }
+
+ ret = i2c_hid_fetch_hid_descriptor(ihid);
+ if (ret < 0)
+ goto err_pm;
+
+ ret = i2c_hid_init_irq(client);
+ if (ret < 0)
+ goto err_pm;
+
+ hid = hid_allocate_device();
+ if (IS_ERR(hid)) {
+ ret = PTR_ERR(hid);
+ goto err_irq;
+ }
+
+ ihid->hid = hid;
+
+ hid->driver_data = client;
+ hid->ll_driver = &i2c_hid_ll_driver;
+ hid->dev.parent = &client->dev;
+ hid->bus = BUS_I2C;
+ hid->version = le16_to_cpu(ihid->hdesc.bcdVersion);
+ hid->vendor = le16_to_cpu(ihid->hdesc.wVendorID);
+ hid->product = le16_to_cpu(ihid->hdesc.wProductID);
+
+ snprintf(hid->name, sizeof(hid->name), "%s %04hX:%04hX",
+ client->name, hid->vendor, hid->product);
+ strlcpy(hid->phys, dev_name(&client->dev), sizeof(hid->phys));
+
+ ihid->quirks = i2c_hid_lookup_quirk(hid->vendor, hid->product);
+
+ ret = hid_add_device(hid);
+ if (ret) {
+ if (ret != -ENODEV)
+ hid_err(client, "can't add hid device: %d\n", ret);
+ goto err_mem_free;
+ }
+
+ pm_runtime_put(&client->dev);
+ return 0;
+
+err_mem_free:
+ hid_destroy_device(hid);
+
+err_irq:
+ free_irq(ihid->irq, ihid);
+
+err_pm:
+ pm_runtime_put_noidle(&client->dev);
+ pm_runtime_disable(&client->dev);
+
+err:
+ if (ihid->desc)
+ gpiod_put(ihid->desc);
+
+ i2c_hid_free_buffers(ihid);
+ kfree(ihid);
+ return ret;
+}
+
+static int i2c_hid_remove(struct i2c_client *client)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ struct hid_device *hid;
+
+ pm_runtime_get_sync(&client->dev);
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+
+ hid = ihid->hid;
+ hid_destroy_device(hid);
+
+ free_irq(ihid->irq, ihid);
+
+ if (ihid->bufsize)
+ i2c_hid_free_buffers(ihid);
+
+ if (ihid->desc)
+ gpiod_put(ihid->desc);
+
+ kfree(ihid);
+
+ acpi_dev_remove_driver_gpios(ACPI_COMPANION(&client->dev));
+
+ return 0;
+}
+
+static void i2c_hid_shutdown(struct i2c_client *client)
+{
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+
+ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
+ free_irq(client->irq, ihid);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int i2c_hid_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ struct hid_device *hid = ihid->hid;
+ int ret;
+ int wake_status;
+
+ if (hid->driver && hid->driver->suspend) {
+ /*
+ * Wake up the device so that IO issues in
+ * HID driver's suspend code can succeed.
+ */
+ ret = pm_runtime_resume(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = hid->driver->suspend(hid, PMSG_SUSPEND);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (!pm_runtime_suspended(dev)) {
+ /* Save some power */
+ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
+
+ disable_irq(ihid->irq);
+ }
+
+ if (device_may_wakeup(&client->dev)) {
+ wake_status = enable_irq_wake(ihid->irq);
+ if (!wake_status)
+ ihid->irq_wake_enabled = true;
+ else
+ hid_warn(hid, "Failed to enable irq wake: %d\n",
+ wake_status);
+ }
+
+ return 0;
+}
+
+static int i2c_hid_resume(struct device *dev)
+{
+ int ret;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ struct hid_device *hid = ihid->hid;
+ int wake_status;
+
+ if (device_may_wakeup(&client->dev) && ihid->irq_wake_enabled) {
+ wake_status = disable_irq_wake(ihid->irq);
+ if (!wake_status)
+ ihid->irq_wake_enabled = false;
+ else
+ hid_warn(hid, "Failed to disable irq wake: %d\n",
+ wake_status);
+ }
+
+ /* We'll resume to full power */
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ enable_irq(ihid->irq);
+ ret = i2c_hid_hwreset(client);
+ if (ret)
+ return ret;
+
+ if (hid->driver && hid->driver->reset_resume) {
+ ret = hid->driver->reset_resume(hid);
+ return ret;
+ }
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM
+static int i2c_hid_runtime_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+
+ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
+ disable_irq(ihid->irq);
+ return 0;
+}
+
+static int i2c_hid_runtime_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+
+ enable_irq(ihid->irq);
+ i2c_hid_set_power(client, I2C_HID_PWR_ON);
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops i2c_hid_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(i2c_hid_suspend, i2c_hid_resume)
+ SET_RUNTIME_PM_OPS(i2c_hid_runtime_suspend, i2c_hid_runtime_resume,
+ NULL)
+};
+
+static const struct i2c_device_id i2c_hid_id_table[] = {
+ { "hid", 0 },
+ { "hid-over-i2c", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, i2c_hid_id_table);
+
+
+static struct i2c_driver i2c_hid_driver = {
+ .driver = {
+ .name = "i2c_hid",
+ .pm = &i2c_hid_pm,
+ .acpi_match_table = ACPI_PTR(i2c_hid_acpi_match),
+ .of_match_table = of_match_ptr(i2c_hid_of_match),
+ },
+
+ .probe = i2c_hid_probe,
+ .remove = i2c_hid_remove,
+ .shutdown = i2c_hid_shutdown,
+ .id_table = i2c_hid_id_table,
+};
+
+module_i2c_driver(i2c_hid_driver);
+
+MODULE_DESCRIPTION("HID over I2C core driver");
+MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@...il.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
new file mode 100644
index 000000000000..1d645c9ab417
--- /dev/null
+++ b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
@@ -0,0 +1,376 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Quirks for I2C-HID devices that do not supply proper descriptors
+ *
+ * Copyright (c) 2018 Julian Sax <jsbc@....de>
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/dmi.h>
+#include <linux/mod_devicetable.h>
+
+#include "i2c-hid.h"
+
+
+struct i2c_hid_desc_override {
+ union {
+ struct i2c_hid_desc *i2c_hid_desc;
+ uint8_t *i2c_hid_desc_buffer;
+ };
+ uint8_t *hid_report_desc;
+ unsigned int hid_report_desc_size;
+ uint8_t *i2c_name;
+};
+
+
+/*
+ * descriptors for the SIPODEV SP1064 touchpad
+ *
+ * This device does not supply any descriptors and on windows a filter
+ * driver operates between the i2c-hid layer and the device and injects
+ * these descriptors when the device is prompted. The descriptors were
+ * extracted by listening to the i2c-hid traffic that occurs between the
+ * windows filter driver and the windows i2c-hid driver.
+ */
+
+static const struct i2c_hid_desc_override sipodev_desc = {
+ .i2c_hid_desc_buffer = (uint8_t [])
+ {0x1e, 0x00, /* Length of descriptor */
+ 0x00, 0x01, /* Version of descriptor */
+ 0xdb, 0x01, /* Length of report descriptor */
+ 0x21, 0x00, /* Location of report descriptor */
+ 0x24, 0x00, /* Location of input report */
+ 0x1b, 0x00, /* Max input report length */
+ 0x25, 0x00, /* Location of output report */
+ 0x11, 0x00, /* Max output report length */
+ 0x22, 0x00, /* Location of command register */
+ 0x23, 0x00, /* Location of data register */
+ 0x11, 0x09, /* Vendor ID */
+ 0x88, 0x52, /* Product ID */
+ 0x06, 0x00, /* Version ID */
+ 0x00, 0x00, 0x00, 0x00 /* Reserved */
+ },
+
+ .hid_report_desc = (uint8_t [])
+ {0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x02, /* Usage (Mouse), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, 0x01, /* Report ID (1), */
+ 0x09, 0x01, /* Usage (Pointer), */
+ 0xA1, 0x00, /* Collection (Physical), */
+ 0x05, 0x09, /* Usage Page (Button), */
+ 0x19, 0x01, /* Usage Minimum (01h), */
+ 0x29, 0x02, /* Usage Maximum (02h), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x06, /* Report Count (6), */
+ 0x81, 0x01, /* Input (Constant), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x15, 0x81, /* Logical Minimum (-127), */
+ 0x25, 0x7F, /* Logical Maximum (127), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x81, 0x06, /* Input (Variable, Relative), */
+ 0xC0, /* End Collection, */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x05, /* Usage (Touchpad), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, 0x04, /* Report ID (4), */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x15, 0x00, /* Logical Minimum (0), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x47, /* Usage (Touch Valid), */
+ 0x09, 0x42, /* Usage (Tip Switch), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x75, 0x03, /* Report Size (3), */
+ 0x25, 0x05, /* Logical Maximum (5), */
+ 0x09, 0x51, /* Usage (Contact Identifier), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x03, /* Input (Constant, Variable), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x55, 0x0E, /* Unit Exponent (14), */
+ 0x65, 0x11, /* Unit (Centimeter), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x46, 0xBC, 0x02, /* Physical Maximum (700), */
+ 0x26, 0x34, 0x05, /* Logical Maximum (1332), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x47, /* Usage (Touch Valid), */
+ 0x09, 0x42, /* Usage (Tip Switch), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x75, 0x03, /* Report Size (3), */
+ 0x25, 0x05, /* Logical Maximum (5), */
+ 0x09, 0x51, /* Usage (Contact Identifier), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x03, /* Input (Constant, Variable), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x46, 0xBC, 0x02, /* Physical Maximum (700), */
+ 0x26, 0x34, 0x05, /* Logical Maximum (1332), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x47, /* Usage (Touch Valid), */
+ 0x09, 0x42, /* Usage (Tip Switch), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x75, 0x03, /* Report Size (3), */
+ 0x25, 0x05, /* Logical Maximum (5), */
+ 0x09, 0x51, /* Usage (Contact Identifier), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x03, /* Input (Constant, Variable), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x46, 0xBC, 0x02, /* Physical Maximum (700), */
+ 0x26, 0x34, 0x05, /* Logical Maximum (1332), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x09, 0x47, /* Usage (Touch Valid), */
+ 0x09, 0x42, /* Usage (Tip Switch), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x75, 0x03, /* Report Size (3), */
+ 0x25, 0x05, /* Logical Maximum (5), */
+ 0x09, 0x51, /* Usage (Contact Identifier), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x03, /* Report Count (3), */
+ 0x81, 0x03, /* Input (Constant, Variable), */
+ 0x05, 0x01, /* Usage Page (Desktop), */
+ 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x09, 0x30, /* Usage (X), */
+ 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x46, 0xBC, 0x02, /* Physical Maximum (700), */
+ 0x26, 0x34, 0x05, /* Logical Maximum (1332), */
+ 0x09, 0x31, /* Usage (Y), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x55, 0x0C, /* Unit Exponent (12), */
+ 0x66, 0x01, 0x10, /* Unit (Seconds), */
+ 0x47, 0xFF, 0xFF, 0x00, 0x00,/* Physical Maximum (65535), */
+ 0x27, 0xFF, 0xFF, 0x00, 0x00,/* Logical Maximum (65535), */
+ 0x75, 0x10, /* Report Size (16), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x09, 0x56, /* Usage (Scan Time), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x09, 0x54, /* Usage (Contact Count), */
+ 0x25, 0x7F, /* Logical Maximum (127), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x05, 0x09, /* Usage Page (Button), */
+ 0x09, 0x01, /* Usage (01h), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x81, 0x02, /* Input (Variable), */
+ 0x95, 0x07, /* Report Count (7), */
+ 0x81, 0x03, /* Input (Constant, Variable), */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x85, 0x02, /* Report ID (2), */
+ 0x09, 0x55, /* Usage (Contact Count Maximum), */
+ 0x09, 0x59, /* Usage (59h), */
+ 0x75, 0x04, /* Report Size (4), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x25, 0x0F, /* Logical Maximum (15), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x85, 0x07, /* Report ID (7), */
+ 0x09, 0x60, /* Usage (60h), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0x95, 0x07, /* Report Count (7), */
+ 0xB1, 0x03, /* Feature (Constant, Variable), */
+ 0x85, 0x06, /* Report ID (6), */
+ 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
+ 0x09, 0xC5, /* Usage (C5h), */
+ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x96, 0x00, 0x01, /* Report Count (256), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0xC0, /* End Collection, */
+ 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */
+ 0x09, 0x01, /* Usage (01h), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, 0x0D, /* Report ID (13), */
+ 0x26, 0xFF, 0x00, /* Logical Maximum (255), */
+ 0x19, 0x01, /* Usage Minimum (01h), */
+ 0x29, 0x02, /* Usage Maximum (02h), */
+ 0x75, 0x08, /* Report Size (8), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0xC0, /* End Collection, */
+ 0x05, 0x0D, /* Usage Page (Digitizer), */
+ 0x09, 0x0E, /* Usage (Configuration), */
+ 0xA1, 0x01, /* Collection (Application), */
+ 0x85, 0x03, /* Report ID (3), */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x02, /* Collection (Logical), */
+ 0x09, 0x52, /* Usage (Device Mode), */
+ 0x25, 0x0A, /* Logical Maximum (10), */
+ 0x95, 0x01, /* Report Count (1), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0xC0, /* End Collection, */
+ 0x09, 0x22, /* Usage (Finger), */
+ 0xA1, 0x00, /* Collection (Physical), */
+ 0x85, 0x05, /* Report ID (5), */
+ 0x09, 0x57, /* Usage (57h), */
+ 0x09, 0x58, /* Usage (58h), */
+ 0x75, 0x01, /* Report Size (1), */
+ 0x95, 0x02, /* Report Count (2), */
+ 0x25, 0x01, /* Logical Maximum (1), */
+ 0xB1, 0x02, /* Feature (Variable), */
+ 0x95, 0x06, /* Report Count (6), */
+ 0xB1, 0x03, /* Feature (Constant, Variable),*/
+ 0xC0, /* End Collection, */
+ 0xC0 /* End Collection */
+ },
+ .hid_report_desc_size = 475,
+ .i2c_name = "SYNA3602:00"
+};
+
+
+static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = {
+ {
+ .ident = "Teclast F6 Pro",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F6 Pro"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ },
+ {
+ .ident = "Teclast F7",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F7"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ },
+ {
+ .ident = "Trekstor Primebook C13",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C13"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ },
+ {
+ .ident = "Trekstor Primebook C11",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C11"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ },
+ {
+ .ident = "Direkt-Tek DTLAPY116-2",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Direkt-Tek"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "DTLAPY116-2"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ },
+ {
+ .ident = "Mediacom Flexbook Edge 11",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MEDIACOM"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "FlexBook edge11 - M-FBE11"),
+ },
+ .driver_data = (void *)&sipodev_desc
+ }
+};
+
+
+struct i2c_hid_desc *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name)
+{
+ struct i2c_hid_desc_override *override;
+ const struct dmi_system_id *system_id;
+
+ system_id = dmi_first_match(i2c_hid_dmi_desc_override_table);
+ if (!system_id)
+ return NULL;
+
+ override = system_id->driver_data;
+ if (strcmp(override->i2c_name, i2c_name))
+ return NULL;
+
+ return override->i2c_hid_desc;
+}
+
+char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name,
+ unsigned int *size)
+{
+ struct i2c_hid_desc_override *override;
+ const struct dmi_system_id *system_id;
+
+ system_id = dmi_first_match(i2c_hid_dmi_desc_override_table);
+ if (!system_id)
+ return NULL;
+
+ override = system_id->driver_data;
+ if (strcmp(override->i2c_name, i2c_name))
+ return NULL;
+
+ *size = override->hid_report_desc_size;
+ return override->hid_report_desc;
+}
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
deleted file mode 100644
index ce2b80009c19..000000000000
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ /dev/null
@@ -1,1339 +0,0 @@
-/*
- * HID over I2C protocol implementation
- *
- * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@...il.com>
- * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France
- * Copyright (c) 2012 Red Hat, Inc
- *
- * This code is partly based on "USB HID support for Linux":
- *
- * Copyright (c) 1999 Andreas Gal
- * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@...e.cz>
- * Copyright (c) 2005 Michael Haboustak <mike-@...ci.rr.com> for Concept2, Inc
- * Copyright (c) 2007-2008 Oliver Neukum
- * Copyright (c) 2006-2010 Jiri Kosina
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/pm.h>
-#include <linux/pm_runtime.h>
-#include <linux/device.h>
-#include <linux/wait.h>
-#include <linux/err.h>
-#include <linux/string.h>
-#include <linux/list.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/hid.h>
-#include <linux/mutex.h>
-#include <linux/acpi.h>
-#include <linux/of.h>
-#include <linux/gpio/consumer.h>
-
-#include <linux/i2c/i2c-hid.h>
-
-#include "../hid-ids.h"
-
-/* quirks to control the device */
-#define I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV BIT(0)
-
-/* flags */
-#define I2C_HID_STARTED 0
-#define I2C_HID_RESET_PENDING 1
-#define I2C_HID_READ_PENDING 2
-
-#define I2C_HID_PWR_ON 0x00
-#define I2C_HID_PWR_SLEEP 0x01
-
-/* debug option */
-static bool debug;
-module_param(debug, bool, 0444);
-MODULE_PARM_DESC(debug, "print a lot of debug information");
-
-#define i2c_hid_dbg(ihid, fmt, arg...) \
-do { \
- if (debug) \
- dev_printk(KERN_DEBUG, &(ihid)->client->dev, fmt, ##arg); \
-} while (0)
-
-struct i2c_hid_desc {
- __le16 wHIDDescLength;
- __le16 bcdVersion;
- __le16 wReportDescLength;
- __le16 wReportDescRegister;
- __le16 wInputRegister;
- __le16 wMaxInputLength;
- __le16 wOutputRegister;
- __le16 wMaxOutputLength;
- __le16 wCommandRegister;
- __le16 wDataRegister;
- __le16 wVendorID;
- __le16 wProductID;
- __le16 wVersionID;
- __le32 reserved;
-} __packed;
-
-struct i2c_hid_cmd {
- unsigned int registerIndex;
- __u8 opcode;
- unsigned int length;
- bool wait;
-};
-
-union command {
- u8 data[0];
- struct cmd {
- __le16 reg;
- __u8 reportTypeID;
- __u8 opcode;
- } __packed c;
-};
-
-#define I2C_HID_CMD(opcode_) \
- .opcode = opcode_, .length = 4, \
- .registerIndex = offsetof(struct i2c_hid_desc, wCommandRegister)
-
-/* fetch HID descriptor */
-static const struct i2c_hid_cmd hid_descr_cmd = { .length = 2 };
-/* fetch report descriptors */
-static const struct i2c_hid_cmd hid_report_descr_cmd = {
- .registerIndex = offsetof(struct i2c_hid_desc,
- wReportDescRegister),
- .opcode = 0x00,
- .length = 2 };
-/* commands */
-static const struct i2c_hid_cmd hid_reset_cmd = { I2C_HID_CMD(0x01),
- .wait = true };
-static const struct i2c_hid_cmd hid_get_report_cmd = { I2C_HID_CMD(0x02) };
-static const struct i2c_hid_cmd hid_set_report_cmd = { I2C_HID_CMD(0x03) };
-static const struct i2c_hid_cmd hid_set_power_cmd = { I2C_HID_CMD(0x08) };
-static const struct i2c_hid_cmd hid_no_cmd = { .length = 0 };
-
-/*
- * These definitions are not used here, but are defined by the spec.
- * Keeping them here for documentation purposes.
- *
- * static const struct i2c_hid_cmd hid_get_idle_cmd = { I2C_HID_CMD(0x04) };
- * static const struct i2c_hid_cmd hid_set_idle_cmd = { I2C_HID_CMD(0x05) };
- * static const struct i2c_hid_cmd hid_get_protocol_cmd = { I2C_HID_CMD(0x06) };
- * static const struct i2c_hid_cmd hid_set_protocol_cmd = { I2C_HID_CMD(0x07) };
- */
-
-static DEFINE_MUTEX(i2c_hid_open_mut);
-
-/* The main device structure */
-struct i2c_hid {
- struct i2c_client *client; /* i2c client */
- struct hid_device *hid; /* pointer to corresponding HID dev */
- union {
- __u8 hdesc_buffer[sizeof(struct i2c_hid_desc)];
- struct i2c_hid_desc hdesc; /* the HID Descriptor */
- };
- __le16 wHIDDescRegister; /* location of the i2c
- * register of the HID
- * descriptor. */
- unsigned int bufsize; /* i2c buffer size */
- u8 *inbuf; /* Input buffer */
- u8 *rawbuf; /* Raw Input buffer */
- u8 *cmdbuf; /* Command buffer */
- u8 *argsbuf; /* Command arguments buffer */
-
- unsigned long flags; /* device flags */
- unsigned long quirks; /* Various quirks */
-
- wait_queue_head_t wait; /* For waiting the interrupt */
- struct gpio_desc *desc;
- int irq;
-
- struct i2c_hid_platform_data pdata;
-
- bool irq_wake_enabled;
- struct mutex reset_lock;
-};
-
-static const struct i2c_hid_quirks {
- __u16 idVendor;
- __u16 idProduct;
- __u32 quirks;
-} i2c_hid_quirks[] = {
- { USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8752,
- I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
- { USB_VENDOR_ID_WEIDA, USB_DEVICE_ID_WEIDA_8755,
- I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV },
- { 0, 0 }
-};
-
-/*
- * i2c_hid_lookup_quirk: return any quirks associated with a I2C HID device
- * @idVendor: the 16-bit vendor ID
- * @idProduct: the 16-bit product ID
- *
- * Returns: a u32 quirks value.
- */
-static u32 i2c_hid_lookup_quirk(const u16 idVendor, const u16 idProduct)
-{
- u32 quirks = 0;
- int n;
-
- for (n = 0; i2c_hid_quirks[n].idVendor; n++)
- if (i2c_hid_quirks[n].idVendor == idVendor &&
- (i2c_hid_quirks[n].idProduct == (__u16)HID_ANY_ID ||
- i2c_hid_quirks[n].idProduct == idProduct))
- quirks = i2c_hid_quirks[n].quirks;
-
- return quirks;
-}
-
-static int __i2c_hid_command(struct i2c_client *client,
- const struct i2c_hid_cmd *command, u8 reportID,
- u8 reportType, u8 *args, int args_len,
- unsigned char *buf_recv, int data_len)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- union command *cmd = (union command *)ihid->cmdbuf;
- int ret;
- struct i2c_msg msg[2];
- int msg_num = 1;
-
- int length = command->length;
- bool wait = command->wait;
- unsigned int registerIndex = command->registerIndex;
-
- /* special case for hid_descr_cmd */
- if (command == &hid_descr_cmd) {
- cmd->c.reg = ihid->wHIDDescRegister;
- } else {
- cmd->data[0] = ihid->hdesc_buffer[registerIndex];
- cmd->data[1] = ihid->hdesc_buffer[registerIndex + 1];
- }
-
- if (length > 2) {
- cmd->c.opcode = command->opcode;
- cmd->c.reportTypeID = reportID | reportType << 4;
- }
-
- memcpy(cmd->data + length, args, args_len);
- length += args_len;
-
- i2c_hid_dbg(ihid, "%s: cmd=%*ph\n", __func__, length, cmd->data);
-
- msg[0].addr = client->addr;
- msg[0].flags = client->flags & I2C_M_TEN;
- msg[0].len = length;
- msg[0].buf = cmd->data;
- if (data_len > 0) {
- msg[1].addr = client->addr;
- msg[1].flags = client->flags & I2C_M_TEN;
- msg[1].flags |= I2C_M_RD;
- msg[1].len = data_len;
- msg[1].buf = buf_recv;
- msg_num = 2;
- set_bit(I2C_HID_READ_PENDING, &ihid->flags);
- }
-
- if (wait)
- set_bit(I2C_HID_RESET_PENDING, &ihid->flags);
-
- ret = i2c_transfer(client->adapter, msg, msg_num);
-
- if (data_len > 0)
- clear_bit(I2C_HID_READ_PENDING, &ihid->flags);
-
- if (ret != msg_num)
- return ret < 0 ? ret : -EIO;
-
- ret = 0;
-
- if (wait) {
- i2c_hid_dbg(ihid, "%s: waiting...\n", __func__);
- if (!wait_event_timeout(ihid->wait,
- !test_bit(I2C_HID_RESET_PENDING, &ihid->flags),
- msecs_to_jiffies(5000)))
- ret = -ENODATA;
- i2c_hid_dbg(ihid, "%s: finished.\n", __func__);
- }
-
- return ret;
-}
-
-static int i2c_hid_command(struct i2c_client *client,
- const struct i2c_hid_cmd *command,
- unsigned char *buf_recv, int data_len)
-{
- return __i2c_hid_command(client, command, 0, 0, NULL, 0,
- buf_recv, data_len);
-}
-
-static int i2c_hid_get_report(struct i2c_client *client, u8 reportType,
- u8 reportID, unsigned char *buf_recv, int data_len)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- u8 args[3];
- int ret;
- int args_len = 0;
- u16 readRegister = le16_to_cpu(ihid->hdesc.wDataRegister);
-
- i2c_hid_dbg(ihid, "%s\n", __func__);
-
- if (reportID >= 0x0F) {
- args[args_len++] = reportID;
- reportID = 0x0F;
- }
-
- args[args_len++] = readRegister & 0xFF;
- args[args_len++] = readRegister >> 8;
-
- ret = __i2c_hid_command(client, &hid_get_report_cmd, reportID,
- reportType, args, args_len, buf_recv, data_len);
- if (ret) {
- dev_err(&client->dev,
- "failed to retrieve report from device.\n");
- return ret;
- }
-
- return 0;
-}
-
-/**
- * i2c_hid_set_or_send_report: forward an incoming report to the device
- * @client: the i2c_client of the device
- * @reportType: 0x03 for HID_FEATURE_REPORT ; 0x02 for HID_OUTPUT_REPORT
- * @reportID: the report ID
- * @buf: the actual data to transfer, without the report ID
- * @len: size of buf
- * @use_data: true: use SET_REPORT HID command, false: send plain OUTPUT report
- */
-static int i2c_hid_set_or_send_report(struct i2c_client *client, u8 reportType,
- u8 reportID, unsigned char *buf, size_t data_len, bool use_data)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- u8 *args = ihid->argsbuf;
- const struct i2c_hid_cmd *hidcmd;
- int ret;
- u16 dataRegister = le16_to_cpu(ihid->hdesc.wDataRegister);
- u16 outputRegister = le16_to_cpu(ihid->hdesc.wOutputRegister);
- u16 maxOutputLength = le16_to_cpu(ihid->hdesc.wMaxOutputLength);
- u16 size;
- int args_len;
- int index = 0;
-
- i2c_hid_dbg(ihid, "%s\n", __func__);
-
- if (data_len > ihid->bufsize)
- return -EINVAL;
-
- size = 2 /* size */ +
- (reportID ? 1 : 0) /* reportID */ +
- data_len /* buf */;
- args_len = (reportID >= 0x0F ? 1 : 0) /* optional third byte */ +
- 2 /* dataRegister */ +
- size /* args */;
-
- if (!use_data && maxOutputLength == 0)
- return -ENOSYS;
-
- if (reportID >= 0x0F) {
- args[index++] = reportID;
- reportID = 0x0F;
- }
-
- /*
- * use the data register for feature reports or if the device does not
- * support the output register
- */
- if (use_data) {
- args[index++] = dataRegister & 0xFF;
- args[index++] = dataRegister >> 8;
- hidcmd = &hid_set_report_cmd;
- } else {
- args[index++] = outputRegister & 0xFF;
- args[index++] = outputRegister >> 8;
- hidcmd = &hid_no_cmd;
- }
-
- args[index++] = size & 0xFF;
- args[index++] = size >> 8;
-
- if (reportID)
- args[index++] = reportID;
-
- memcpy(&args[index], buf, data_len);
-
- ret = __i2c_hid_command(client, hidcmd, reportID,
- reportType, args, args_len, NULL, 0);
- if (ret) {
- dev_err(&client->dev, "failed to set a report to device.\n");
- return ret;
- }
-
- return data_len;
-}
-
-static int i2c_hid_set_power(struct i2c_client *client, int power_state)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int ret;
-
- i2c_hid_dbg(ihid, "%s\n", __func__);
-
- /*
- * Some devices require to send a command to wakeup before power on.
- * The call will get a return value (EREMOTEIO) but device will be
- * triggered and activated. After that, it goes like a normal device.
- */
- if (power_state == I2C_HID_PWR_ON &&
- ihid->quirks & I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV) {
- ret = i2c_hid_command(client, &hid_set_power_cmd, NULL, 0);
-
- /* Device was already activated */
- if (!ret)
- goto set_pwr_exit;
- }
-
- ret = __i2c_hid_command(client, &hid_set_power_cmd, power_state,
- 0, NULL, 0, NULL, 0);
-
- if (ret)
- dev_err(&client->dev, "failed to change power setting.\n");
-
-set_pwr_exit:
- return ret;
-}
-
-static int i2c_hid_hwreset(struct i2c_client *client)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int ret;
-
- i2c_hid_dbg(ihid, "%s\n", __func__);
-
- /*
- * This prevents sending feature reports while the device is
- * being reset. Otherwise we may lose the reset complete
- * interrupt.
- */
- mutex_lock(&ihid->reset_lock);
-
- ret = i2c_hid_set_power(client, I2C_HID_PWR_ON);
- if (ret)
- goto out_unlock;
-
- /*
- * The HID over I2C specification states that if a DEVICE needs time
- * after the PWR_ON request, it should utilise CLOCK stretching.
- * However, it has been observered that the Windows driver provides a
- * 1ms sleep between the PWR_ON and RESET requests and that some devices
- * rely on this.
- */
- usleep_range(1000, 5000);
-
- i2c_hid_dbg(ihid, "resetting...\n");
-
- ret = i2c_hid_command(client, &hid_reset_cmd, NULL, 0);
- if (ret) {
- dev_err(&client->dev, "failed to reset device.\n");
- i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
- }
-
-out_unlock:
- mutex_unlock(&ihid->reset_lock);
- return ret;
-}
-
-static void i2c_hid_get_input(struct i2c_hid *ihid)
-{
- int ret;
- u32 ret_size;
- int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
-
- if (size > ihid->bufsize)
- size = ihid->bufsize;
-
- ret = i2c_master_recv(ihid->client, ihid->inbuf, size);
- if (ret != size) {
- if (ret < 0)
- return;
-
- dev_err(&ihid->client->dev, "%s: got %d data instead of %d\n",
- __func__, ret, size);
- return;
- }
-
- ret_size = ihid->inbuf[0] | ihid->inbuf[1] << 8;
-
- if (!ret_size) {
- /* host or device initiated RESET completed */
- if (test_and_clear_bit(I2C_HID_RESET_PENDING, &ihid->flags))
- wake_up(&ihid->wait);
- return;
- }
-
- if ((ret_size > size) || (ret_size < 2)) {
- dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
- __func__, size, ret_size);
- return;
- }
-
- i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);
-
- if (test_bit(I2C_HID_STARTED, &ihid->flags))
- hid_input_report(ihid->hid, HID_INPUT_REPORT, ihid->inbuf + 2,
- ret_size - 2, 1);
-
- return;
-}
-
-static irqreturn_t i2c_hid_irq(int irq, void *dev_id)
-{
- struct i2c_hid *ihid = dev_id;
-
- if (test_bit(I2C_HID_READ_PENDING, &ihid->flags))
- return IRQ_HANDLED;
-
- i2c_hid_get_input(ihid);
-
- return IRQ_HANDLED;
-}
-
-static int i2c_hid_get_report_length(struct hid_report *report)
-{
- return ((report->size - 1) >> 3) + 1 +
- report->device->report_enum[report->type].numbered + 2;
-}
-
-static void i2c_hid_init_report(struct hid_report *report, u8 *buffer,
- size_t bufsize)
-{
- struct hid_device *hid = report->device;
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- unsigned int size, ret_size;
-
- size = i2c_hid_get_report_length(report);
- if (i2c_hid_get_report(client,
- report->type == HID_FEATURE_REPORT ? 0x03 : 0x01,
- report->id, buffer, size))
- return;
-
- i2c_hid_dbg(ihid, "report (len=%d): %*ph\n", size, size, buffer);
-
- ret_size = buffer[0] | (buffer[1] << 8);
-
- if (ret_size != size) {
- dev_err(&client->dev, "error in %s size:%d / ret_size:%d\n",
- __func__, size, ret_size);
- return;
- }
-
- /* hid->driver_lock is held as we are in probe function,
- * we just need to setup the input fields, so using
- * hid_report_raw_event is safe. */
- hid_report_raw_event(hid, report->type, buffer + 2, size - 2, 1);
-}
-
-/*
- * Initialize all reports
- */
-static void i2c_hid_init_reports(struct hid_device *hid)
-{
- struct hid_report *report;
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- u8 *inbuf = kzalloc(ihid->bufsize, GFP_KERNEL);
-
- if (!inbuf) {
- dev_err(&client->dev, "can not retrieve initial reports\n");
- return;
- }
-
- /*
- * The device must be powered on while we fetch initial reports
- * from it.
- */
- pm_runtime_get_sync(&client->dev);
-
- list_for_each_entry(report,
- &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
- i2c_hid_init_report(report, inbuf, ihid->bufsize);
-
- pm_runtime_put(&client->dev);
-
- kfree(inbuf);
-}
-
-/*
- * Traverse the supplied list of reports and find the longest
- */
-static void i2c_hid_find_max_report(struct hid_device *hid, unsigned int type,
- unsigned int *max)
-{
- struct hid_report *report;
- unsigned int size;
-
- /* We should not rely on wMaxInputLength, as some devices may set it to
- * a wrong length. */
- list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
- size = i2c_hid_get_report_length(report);
- if (*max < size)
- *max = size;
- }
-}
-
-static void i2c_hid_free_buffers(struct i2c_hid *ihid)
-{
- kfree(ihid->inbuf);
- kfree(ihid->rawbuf);
- kfree(ihid->argsbuf);
- kfree(ihid->cmdbuf);
- ihid->inbuf = NULL;
- ihid->rawbuf = NULL;
- ihid->cmdbuf = NULL;
- ihid->argsbuf = NULL;
- ihid->bufsize = 0;
-}
-
-static int i2c_hid_alloc_buffers(struct i2c_hid *ihid, size_t report_size)
-{
- /* the worst case is computed from the set_report command with a
- * reportID > 15 and the maximum report length */
- int args_len = sizeof(__u8) + /* ReportID */
- sizeof(__u8) + /* optional ReportID byte */
- sizeof(__u16) + /* data register */
- sizeof(__u16) + /* size of the report */
- report_size; /* report */
-
- ihid->inbuf = kzalloc(report_size, GFP_KERNEL);
- ihid->rawbuf = kzalloc(report_size, GFP_KERNEL);
- ihid->argsbuf = kzalloc(args_len, GFP_KERNEL);
- ihid->cmdbuf = kzalloc(sizeof(union command) + args_len, GFP_KERNEL);
-
- if (!ihid->inbuf || !ihid->rawbuf || !ihid->argsbuf || !ihid->cmdbuf) {
- i2c_hid_free_buffers(ihid);
- return -ENOMEM;
- }
-
- ihid->bufsize = report_size;
-
- return 0;
-}
-
-static int i2c_hid_get_raw_report(struct hid_device *hid,
- unsigned char report_number, __u8 *buf, size_t count,
- unsigned char report_type)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- size_t ret_count, ask_count;
- int ret;
-
- if (report_type == HID_OUTPUT_REPORT)
- return -EINVAL;
-
- /* +2 bytes to include the size of the reply in the query buffer */
- ask_count = min(count + 2, (size_t)ihid->bufsize);
-
- ret = i2c_hid_get_report(client,
- report_type == HID_FEATURE_REPORT ? 0x03 : 0x01,
- report_number, ihid->rawbuf, ask_count);
-
- if (ret < 0)
- return ret;
-
- ret_count = ihid->rawbuf[0] | (ihid->rawbuf[1] << 8);
-
- if (ret_count <= 2)
- return 0;
-
- ret_count = min(ret_count, ask_count);
-
- /* The query buffer contains the size, dropping it in the reply */
- count = min(count, ret_count - 2);
- memcpy(buf, ihid->rawbuf + 2, count);
-
- return count;
-}
-
-static int i2c_hid_output_raw_report(struct hid_device *hid, __u8 *buf,
- size_t count, unsigned char report_type, bool use_data)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int report_id = buf[0];
- int ret;
-
- if (report_type == HID_INPUT_REPORT)
- return -EINVAL;
-
- mutex_lock(&ihid->reset_lock);
-
- if (report_id) {
- buf++;
- count--;
- }
-
- ret = i2c_hid_set_or_send_report(client,
- report_type == HID_FEATURE_REPORT ? 0x03 : 0x02,
- report_id, buf, count, use_data);
-
- if (report_id && ret >= 0)
- ret++; /* add report_id to the number of transfered bytes */
-
- mutex_unlock(&ihid->reset_lock);
-
- return ret;
-}
-
-static int i2c_hid_output_report(struct hid_device *hid, __u8 *buf,
- size_t count)
-{
- return i2c_hid_output_raw_report(hid, buf, count, HID_OUTPUT_REPORT,
- false);
-}
-
-static int i2c_hid_raw_request(struct hid_device *hid, unsigned char reportnum,
- __u8 *buf, size_t len, unsigned char rtype,
- int reqtype)
-{
- switch (reqtype) {
- case HID_REQ_GET_REPORT:
- return i2c_hid_get_raw_report(hid, reportnum, buf, len, rtype);
- case HID_REQ_SET_REPORT:
- if (buf[0] != reportnum)
- return -EINVAL;
- return i2c_hid_output_raw_report(hid, buf, len, rtype, true);
- default:
- return -EIO;
- }
-}
-
-static int i2c_hid_parse(struct hid_device *hid)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- struct i2c_hid_desc *hdesc = &ihid->hdesc;
- unsigned int rsize;
- char *rdesc;
- int ret;
- int tries = 3;
-
- i2c_hid_dbg(ihid, "entering %s\n", __func__);
-
- rsize = le16_to_cpu(hdesc->wReportDescLength);
- if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
- dbg_hid("weird size of report descriptor (%u)\n", rsize);
- return -EINVAL;
- }
-
- do {
- ret = i2c_hid_hwreset(client);
- if (ret)
- msleep(1000);
- } while (tries-- > 0 && ret);
-
- if (ret)
- return ret;
-
- rdesc = kzalloc(rsize, GFP_KERNEL);
-
- if (!rdesc) {
- dbg_hid("couldn't allocate rdesc memory\n");
- return -ENOMEM;
- }
-
- i2c_hid_dbg(ihid, "asking HID report descriptor\n");
-
- ret = i2c_hid_command(client, &hid_report_descr_cmd, rdesc, rsize);
- if (ret) {
- hid_err(hid, "reading report descriptor failed\n");
- kfree(rdesc);
- return -EIO;
- }
-
- i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);
-
- ret = hid_parse_report(hid, rdesc, rsize);
- kfree(rdesc);
- if (ret) {
- dbg_hid("parsing report descriptor failed\n");
- return ret;
- }
-
- return 0;
-}
-
-static int i2c_hid_start(struct hid_device *hid)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int ret;
- unsigned int bufsize = HID_MIN_BUFFER_SIZE;
-
- i2c_hid_find_max_report(hid, HID_INPUT_REPORT, &bufsize);
- i2c_hid_find_max_report(hid, HID_OUTPUT_REPORT, &bufsize);
- i2c_hid_find_max_report(hid, HID_FEATURE_REPORT, &bufsize);
-
- if (bufsize > ihid->bufsize) {
- i2c_hid_free_buffers(ihid);
-
- ret = i2c_hid_alloc_buffers(ihid, bufsize);
-
- if (ret)
- return ret;
- }
-
- if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS))
- i2c_hid_init_reports(hid);
-
- return 0;
-}
-
-static void i2c_hid_stop(struct hid_device *hid)
-{
- hid->claimed = 0;
-}
-
-static int i2c_hid_open(struct hid_device *hid)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int ret = 0;
-
- mutex_lock(&i2c_hid_open_mut);
- if (!hid->open++) {
- ret = pm_runtime_get_sync(&client->dev);
- if (ret < 0) {
- hid->open--;
- goto done;
- }
- set_bit(I2C_HID_STARTED, &ihid->flags);
- }
-done:
- mutex_unlock(&i2c_hid_open_mut);
- return ret < 0 ? ret : 0;
-}
-
-static void i2c_hid_close(struct hid_device *hid)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
-
- /* protecting hid->open to make sure we don't restart
- * data acquistion due to a resumption we no longer
- * care about
- */
- mutex_lock(&i2c_hid_open_mut);
- if (!--hid->open) {
- clear_bit(I2C_HID_STARTED, &ihid->flags);
-
- /* Save some power */
- pm_runtime_put(&client->dev);
- }
- mutex_unlock(&i2c_hid_open_mut);
-}
-
-static int i2c_hid_power(struct hid_device *hid, int lvl)
-{
- struct i2c_client *client = hid->driver_data;
- struct i2c_hid *ihid = i2c_get_clientdata(client);
-
- i2c_hid_dbg(ihid, "%s lvl:%d\n", __func__, lvl);
-
- switch (lvl) {
- case PM_HINT_FULLON:
- pm_runtime_get_sync(&client->dev);
- break;
- case PM_HINT_NORMAL:
- pm_runtime_put(&client->dev);
- break;
- }
- return 0;
-}
-
-static struct hid_ll_driver i2c_hid_ll_driver = {
- .parse = i2c_hid_parse,
- .start = i2c_hid_start,
- .stop = i2c_hid_stop,
- .open = i2c_hid_open,
- .close = i2c_hid_close,
- .power = i2c_hid_power,
- .output_report = i2c_hid_output_report,
- .raw_request = i2c_hid_raw_request,
-};
-
-static int i2c_hid_init_irq(struct i2c_client *client)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- int ret;
-
- dev_dbg(&client->dev, "Requesting IRQ: %d\n", ihid->irq);
-
- ret = request_threaded_irq(ihid->irq, NULL, i2c_hid_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- client->name, ihid);
- if (ret < 0) {
- dev_warn(&client->dev,
- "Could not register for %s interrupt, irq = %d,"
- " ret = %d\n",
- client->name, ihid->irq, ret);
-
- return ret;
- }
-
- return 0;
-}
-
-static int i2c_hid_fetch_hid_descriptor(struct i2c_hid *ihid)
-{
- struct i2c_client *client = ihid->client;
- struct i2c_hid_desc *hdesc = &ihid->hdesc;
- unsigned int dsize;
- int ret;
-
- /* i2c hid fetch using a fixed descriptor size (30 bytes) */
- i2c_hid_dbg(ihid, "Fetching the HID descriptor\n");
- ret = i2c_hid_command(client, &hid_descr_cmd, ihid->hdesc_buffer,
- sizeof(struct i2c_hid_desc));
- if (ret) {
- dev_err(&client->dev, "hid_descr_cmd failed\n");
- return -ENODEV;
- }
-
- /* Validate the length of HID descriptor, the 4 first bytes:
- * bytes 0-1 -> length
- * bytes 2-3 -> bcdVersion (has to be 1.00) */
- /* check bcdVersion == 1.0 */
- if (le16_to_cpu(hdesc->bcdVersion) != 0x0100) {
- dev_err(&client->dev,
- "unexpected HID descriptor bcdVersion (0x%04hx)\n",
- le16_to_cpu(hdesc->bcdVersion));
- return -ENODEV;
- }
-
- /* Descriptor length should be 30 bytes as per the specification */
- dsize = le16_to_cpu(hdesc->wHIDDescLength);
- if (dsize != sizeof(struct i2c_hid_desc)) {
- dev_err(&client->dev, "weird size of HID descriptor (%u)\n",
- dsize);
- return -ENODEV;
- }
- i2c_hid_dbg(ihid, "HID Descriptor: %*ph\n", dsize, ihid->hdesc_buffer);
- return 0;
-}
-
-#ifdef CONFIG_ACPI
-
-/* Default GPIO mapping */
-static const struct acpi_gpio_params i2c_hid_irq_gpio = { 0, 0, true };
-static const struct acpi_gpio_mapping i2c_hid_acpi_gpios[] = {
- { "gpios", &i2c_hid_irq_gpio, 1 },
- { },
-};
-
-static int i2c_hid_acpi_pdata(struct i2c_client *client,
- struct i2c_hid_platform_data *pdata)
-{
- static u8 i2c_hid_guid[] = {
- 0xF7, 0xF6, 0xDF, 0x3C, 0x67, 0x42, 0x55, 0x45,
- 0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE,
- };
- union acpi_object *obj;
- struct acpi_device *adev;
- acpi_handle handle;
- int ret;
-
- handle = ACPI_HANDLE(&client->dev);
- if (!handle || acpi_bus_get_device(handle, &adev))
- return -ENODEV;
-
- obj = acpi_evaluate_dsm_typed(handle, i2c_hid_guid, 1, 1, NULL,
- ACPI_TYPE_INTEGER);
- if (!obj) {
- dev_err(&client->dev, "device _DSM execution failed\n");
- return -ENODEV;
- }
-
- pdata->hid_descriptor_address = obj->integer.value;
- ACPI_FREE(obj);
-
- /* GPIOs are optional */
- ret = acpi_dev_add_driver_gpios(adev, i2c_hid_acpi_gpios);
- return ret < 0 && ret != -ENXIO ? ret : 0;
-}
-
-static void i2c_hid_acpi_fix_up_power(struct device *dev)
-{
- acpi_handle handle = ACPI_HANDLE(dev);
- struct acpi_device *adev;
-
- if (handle && acpi_bus_get_device(handle, &adev) == 0)
- acpi_device_fix_up_power(adev);
-}
-
-static const struct acpi_device_id i2c_hid_acpi_match[] = {
- {"ACPI0C50", 0 },
- {"PNP0C50", 0 },
- { },
-};
-MODULE_DEVICE_TABLE(acpi, i2c_hid_acpi_match);
-#else
-static inline int i2c_hid_acpi_pdata(struct i2c_client *client,
- struct i2c_hid_platform_data *pdata)
-{
- return -ENODEV;
-}
-
-static inline void i2c_hid_acpi_fix_up_power(struct device *dev) {}
-#endif
-
-#ifdef CONFIG_OF
-static int i2c_hid_of_probe(struct i2c_client *client,
- struct i2c_hid_platform_data *pdata)
-{
- struct device *dev = &client->dev;
- u32 val;
- int ret;
-
- ret = of_property_read_u32(dev->of_node, "hid-descr-addr", &val);
- if (ret) {
- dev_err(&client->dev, "HID register address not provided\n");
- return -ENODEV;
- }
- if (val >> 16) {
- dev_err(&client->dev, "Bad HID register address: 0x%08x\n",
- val);
- return -EINVAL;
- }
- pdata->hid_descriptor_address = val;
-
- return 0;
-}
-
-static const struct of_device_id i2c_hid_of_match[] = {
- { .compatible = "hid-over-i2c" },
- {},
-};
-MODULE_DEVICE_TABLE(of, i2c_hid_of_match);
-#else
-static inline int i2c_hid_of_probe(struct i2c_client *client,
- struct i2c_hid_platform_data *pdata)
-{
- return -ENODEV;
-}
-#endif
-
-static int i2c_hid_probe(struct i2c_client *client,
- const struct i2c_device_id *dev_id)
-{
- int ret;
- struct i2c_hid *ihid;
- struct hid_device *hid;
- __u16 hidRegister;
- struct i2c_hid_platform_data *platform_data = client->dev.platform_data;
-
- dbg_hid("HID probe called for i2c 0x%02x\n", client->addr);
-
- ihid = kzalloc(sizeof(struct i2c_hid), GFP_KERNEL);
- if (!ihid)
- return -ENOMEM;
-
- if (client->dev.of_node) {
- ret = i2c_hid_of_probe(client, &ihid->pdata);
- if (ret)
- goto err;
- } else if (!platform_data) {
- ret = i2c_hid_acpi_pdata(client, &ihid->pdata);
- if (ret) {
- dev_err(&client->dev,
- "HID register address not provided\n");
- goto err;
- }
- } else {
- ihid->pdata = *platform_data;
- }
-
- if (client->irq > 0) {
- ihid->irq = client->irq;
- } else if (ACPI_COMPANION(&client->dev)) {
- ihid->desc = gpiod_get(&client->dev, NULL, GPIOD_IN);
- if (IS_ERR(ihid->desc)) {
- dev_err(&client->dev, "Failed to get GPIO interrupt\n");
- return PTR_ERR(ihid->desc);
- }
-
- ihid->irq = gpiod_to_irq(ihid->desc);
- if (ihid->irq < 0) {
- gpiod_put(ihid->desc);
- dev_err(&client->dev, "Failed to convert GPIO to IRQ\n");
- return ihid->irq;
- }
- }
-
- i2c_set_clientdata(client, ihid);
-
- ihid->client = client;
-
- hidRegister = ihid->pdata.hid_descriptor_address;
- ihid->wHIDDescRegister = cpu_to_le16(hidRegister);
-
- init_waitqueue_head(&ihid->wait);
- mutex_init(&ihid->reset_lock);
-
- /* we need to allocate the command buffer without knowing the maximum
- * size of the reports. Let's use HID_MIN_BUFFER_SIZE, then we do the
- * real computation later. */
- ret = i2c_hid_alloc_buffers(ihid, HID_MIN_BUFFER_SIZE);
- if (ret < 0)
- goto err;
-
- i2c_hid_acpi_fix_up_power(&client->dev);
-
- pm_runtime_get_noresume(&client->dev);
- pm_runtime_set_active(&client->dev);
- pm_runtime_enable(&client->dev);
- device_enable_async_suspend(&client->dev);
-
- /* Make sure there is something at this address */
- ret = i2c_smbus_read_byte(client);
- if (ret < 0) {
- dev_dbg(&client->dev, "nothing at this address: %d\n", ret);
- ret = -ENXIO;
- goto err_pm;
- }
-
- ret = i2c_hid_fetch_hid_descriptor(ihid);
- if (ret < 0)
- goto err_pm;
-
- ret = i2c_hid_init_irq(client);
- if (ret < 0)
- goto err_pm;
-
- hid = hid_allocate_device();
- if (IS_ERR(hid)) {
- ret = PTR_ERR(hid);
- goto err_irq;
- }
-
- ihid->hid = hid;
-
- hid->driver_data = client;
- hid->ll_driver = &i2c_hid_ll_driver;
- hid->dev.parent = &client->dev;
- hid->bus = BUS_I2C;
- hid->version = le16_to_cpu(ihid->hdesc.bcdVersion);
- hid->vendor = le16_to_cpu(ihid->hdesc.wVendorID);
- hid->product = le16_to_cpu(ihid->hdesc.wProductID);
-
- snprintf(hid->name, sizeof(hid->name), "%s %04hX:%04hX",
- client->name, hid->vendor, hid->product);
- strlcpy(hid->phys, dev_name(&client->dev), sizeof(hid->phys));
-
- ihid->quirks = i2c_hid_lookup_quirk(hid->vendor, hid->product);
-
- ret = hid_add_device(hid);
- if (ret) {
- if (ret != -ENODEV)
- hid_err(client, "can't add hid device: %d\n", ret);
- goto err_mem_free;
- }
-
- pm_runtime_put(&client->dev);
- return 0;
-
-err_mem_free:
- hid_destroy_device(hid);
-
-err_irq:
- free_irq(ihid->irq, ihid);
-
-err_pm:
- pm_runtime_put_noidle(&client->dev);
- pm_runtime_disable(&client->dev);
-
-err:
- if (ihid->desc)
- gpiod_put(ihid->desc);
-
- i2c_hid_free_buffers(ihid);
- kfree(ihid);
- return ret;
-}
-
-static int i2c_hid_remove(struct i2c_client *client)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- struct hid_device *hid;
-
- pm_runtime_get_sync(&client->dev);
- pm_runtime_disable(&client->dev);
- pm_runtime_set_suspended(&client->dev);
- pm_runtime_put_noidle(&client->dev);
-
- hid = ihid->hid;
- hid_destroy_device(hid);
-
- free_irq(ihid->irq, ihid);
-
- if (ihid->bufsize)
- i2c_hid_free_buffers(ihid);
-
- if (ihid->desc)
- gpiod_put(ihid->desc);
-
- kfree(ihid);
-
- acpi_dev_remove_driver_gpios(ACPI_COMPANION(&client->dev));
-
- return 0;
-}
-
-static void i2c_hid_shutdown(struct i2c_client *client)
-{
- struct i2c_hid *ihid = i2c_get_clientdata(client);
-
- i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
- free_irq(client->irq, ihid);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int i2c_hid_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- struct hid_device *hid = ihid->hid;
- int ret;
- int wake_status;
-
- if (hid->driver && hid->driver->suspend) {
- /*
- * Wake up the device so that IO issues in
- * HID driver's suspend code can succeed.
- */
- ret = pm_runtime_resume(dev);
- if (ret < 0)
- return ret;
-
- ret = hid->driver->suspend(hid, PMSG_SUSPEND);
- if (ret < 0)
- return ret;
- }
-
- if (!pm_runtime_suspended(dev)) {
- /* Save some power */
- i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
-
- disable_irq(ihid->irq);
- }
-
- if (device_may_wakeup(&client->dev)) {
- wake_status = enable_irq_wake(ihid->irq);
- if (!wake_status)
- ihid->irq_wake_enabled = true;
- else
- hid_warn(hid, "Failed to enable irq wake: %d\n",
- wake_status);
- }
-
- return 0;
-}
-
-static int i2c_hid_resume(struct device *dev)
-{
- int ret;
- struct i2c_client *client = to_i2c_client(dev);
- struct i2c_hid *ihid = i2c_get_clientdata(client);
- struct hid_device *hid = ihid->hid;
- int wake_status;
-
- if (device_may_wakeup(&client->dev) && ihid->irq_wake_enabled) {
- wake_status = disable_irq_wake(ihid->irq);
- if (!wake_status)
- ihid->irq_wake_enabled = false;
- else
- hid_warn(hid, "Failed to disable irq wake: %d\n",
- wake_status);
- }
-
- /* We'll resume to full power */
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
-
- enable_irq(ihid->irq);
- ret = i2c_hid_hwreset(client);
- if (ret)
- return ret;
-
- if (hid->driver && hid->driver->reset_resume) {
- ret = hid->driver->reset_resume(hid);
- return ret;
- }
-
- return 0;
-}
-#endif
-
-#ifdef CONFIG_PM
-static int i2c_hid_runtime_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct i2c_hid *ihid = i2c_get_clientdata(client);
-
- i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
- disable_irq(ihid->irq);
- return 0;
-}
-
-static int i2c_hid_runtime_resume(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct i2c_hid *ihid = i2c_get_clientdata(client);
-
- enable_irq(ihid->irq);
- i2c_hid_set_power(client, I2C_HID_PWR_ON);
- return 0;
-}
-#endif
-
-static const struct dev_pm_ops i2c_hid_pm = {
- SET_SYSTEM_SLEEP_PM_OPS(i2c_hid_suspend, i2c_hid_resume)
- SET_RUNTIME_PM_OPS(i2c_hid_runtime_suspend, i2c_hid_runtime_resume,
- NULL)
-};
-
-static const struct i2c_device_id i2c_hid_id_table[] = {
- { "hid", 0 },
- { "hid-over-i2c", 0 },
- { },
-};
-MODULE_DEVICE_TABLE(i2c, i2c_hid_id_table);
-
-
-static struct i2c_driver i2c_hid_driver = {
- .driver = {
- .name = "i2c_hid",
- .pm = &i2c_hid_pm,
- .acpi_match_table = ACPI_PTR(i2c_hid_acpi_match),
- .of_match_table = of_match_ptr(i2c_hid_of_match),
- },
-
- .probe = i2c_hid_probe,
- .remove = i2c_hid_remove,
- .shutdown = i2c_hid_shutdown,
- .id_table = i2c_hid_id_table,
-};
-
-module_i2c_driver(i2c_hid_driver);
-
-MODULE_DESCRIPTION("HID over I2C core driver");
-MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@...il.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/hid/i2c-hid/i2c-hid.h b/drivers/hid/i2c-hid/i2c-hid.h
new file mode 100644
index 000000000000..a8c19aef5824
--- /dev/null
+++ b/drivers/hid/i2c-hid/i2c-hid.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef I2C_HID_H
+#define I2C_HID_H
+
+
+#ifdef CONFIG_DMI
+struct i2c_hid_desc *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name);
+char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name,
+ unsigned int *size);
+#else
+static inline struct i2c_hid_desc
+ *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name)
+{ return NULL; }
+static inline char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name,
+ unsigned int *size)
+{ return NULL; }
+#endif
+
+#endif
diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index 5e9939045852..ec138845a474 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -805,8 +805,8 @@ void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev)
unsigned long flags;
for (i = 0 ; i < dev->num_ports; i++) {
- cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work);
det = &sriov->alias_guid.ports_guid[i];
+ cancel_delayed_work_sync(&det->alias_guid_work);
spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
while (!list_empty(&det->cb_list)) {
cb_ctx = list_entry(det->cb_list.next,
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 63110fbbb410..d51734e0c350 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -143,7 +143,7 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)
for (tmp = dev; tmp; tmp = tmp->bus->self)
level++;
- size = sizeof(*info) + level * sizeof(struct acpi_dmar_pci_path);
+ size = sizeof(*info) + level * sizeof(info->path[0]);
if (size <= sizeof(dmar_pci_notify_info_buf)) {
info = (struct dmar_pci_notify_info *)dmar_pci_notify_info_buf;
} else {
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 86e349614e21..28feb1744710 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1636,6 +1636,9 @@ static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
u32 pmen;
unsigned long flags;
+ if (!cap_plmr(iommu->cap) && !cap_phmr(iommu->cap))
+ return;
+
raw_spin_lock_irqsave(&iommu->register_lock, flags);
pmen = readl(iommu->reg + DMAR_PMEN_REG);
pmen &= ~DMA_PMEN_EPM;
diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c
index 05d87f60d929..406bfe618448 100644
--- a/drivers/irqchip/irq-mbigen.c
+++ b/drivers/irqchip/irq-mbigen.c
@@ -160,6 +160,9 @@ static void mbigen_write_msg(struct msi_desc *desc, struct msi_msg *msg)
void __iomem *base = d->chip_data;
u32 val;
+ if (!msg->address_lo && !msg->address_hi)
+ return;
+
base += get_mbigen_vec_reg(d->hwirq);
val = readl_relaxed(base);
diff --git a/drivers/misc/lkdtm.h b/drivers/misc/lkdtm.h
index fdf954c2107f..6abc97b245e4 100644
--- a/drivers/misc/lkdtm.h
+++ b/drivers/misc/lkdtm.h
@@ -40,7 +40,9 @@ void lkdtm_EXEC_KMALLOC(void);
void lkdtm_EXEC_VMALLOC(void);
void lkdtm_EXEC_RODATA(void);
void lkdtm_EXEC_USERSPACE(void);
+void lkdtm_EXEC_NULL(void);
void lkdtm_ACCESS_USERSPACE(void);
+void lkdtm_ACCESS_NULL(void);
/* lkdtm_rodata.c */
void lkdtm_rodata_do_nothing(void);
diff --git a/drivers/misc/lkdtm_core.c b/drivers/misc/lkdtm_core.c
index b2989f2d3126..035e51bea450 100644
--- a/drivers/misc/lkdtm_core.c
+++ b/drivers/misc/lkdtm_core.c
@@ -214,7 +214,9 @@ struct crashtype crashtypes[] = {
CRASHTYPE(EXEC_VMALLOC),
CRASHTYPE(EXEC_RODATA),
CRASHTYPE(EXEC_USERSPACE),
+ CRASHTYPE(EXEC_NULL),
CRASHTYPE(ACCESS_USERSPACE),
+ CRASHTYPE(ACCESS_NULL),
CRASHTYPE(WRITE_RO),
CRASHTYPE(WRITE_RO_AFTER_INIT),
CRASHTYPE(WRITE_KERN),
diff --git a/drivers/misc/lkdtm_perms.c b/drivers/misc/lkdtm_perms.c
index 45f1c0f96612..1a9dcdaa95f0 100644
--- a/drivers/misc/lkdtm_perms.c
+++ b/drivers/misc/lkdtm_perms.c
@@ -160,6 +160,11 @@ void lkdtm_EXEC_USERSPACE(void)
vm_munmap(user_addr, PAGE_SIZE);
}
+void lkdtm_EXEC_NULL(void)
+{
+ execute_location(NULL, CODE_AS_IS);
+}
+
void lkdtm_ACCESS_USERSPACE(void)
{
unsigned long user_addr, tmp = 0;
@@ -191,6 +196,19 @@ void lkdtm_ACCESS_USERSPACE(void)
vm_munmap(user_addr, PAGE_SIZE);
}
+void lkdtm_ACCESS_NULL(void)
+{
+ unsigned long tmp;
+ unsigned long *ptr = (unsigned long *)NULL;
+
+ pr_info("attempting bad read at %px\n", ptr);
+ tmp = *ptr;
+ tmp += 0xc0dec0de;
+
+ pr_info("attempting bad write at %px\n", ptr);
+ *ptr = tmp;
+}
+
void __init lkdtm_perms_init(void)
{
/* Make sure we can write to __ro_after_init values during __init */
diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 8fa478c3b0db..619457b90dc7 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -1120,7 +1120,7 @@ static inline void mmc_davinci_cpufreq_deregister(struct mmc_davinci_host *host)
{
}
#endif
-static void __init init_mmcsd_host(struct mmc_davinci_host *host)
+static void init_mmcsd_host(struct mmc_davinci_host *host)
{
mmc_davinci_reset_ctrl(host, 1);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index fc437d75ac76..b46b56ad7517 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1747,11 +1747,6 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
if (ret < 0)
pr_warn("%s: failed debugFS registration\n", __func__);
#endif
- /* Start the ball rolling... */
- pr_debug("%s: DMA RX/TX processes started...\n", dev->name);
- priv->hw->dma->start_tx(priv->ioaddr);
- priv->hw->dma->start_rx(priv->ioaddr);
-
/* Dump DMA/MAC registers */
if (netif_msg_hw(priv)) {
priv->hw->mac->dump_regs(priv->hw);
@@ -1779,6 +1774,11 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
if (priv->tso)
priv->hw->dma->enable_tso(priv->ioaddr, 1, STMMAC_CHAN0);
+ /* Start the ball rolling... */
+ pr_debug("%s: DMA RX/TX processes started...\n", dev->name);
+ priv->hw->dma->start_tx(priv->ioaddr);
+ priv->hw->dma->start_rx(priv->ioaddr);
+
return 0;
}
diff --git a/drivers/net/wireless/rsi/rsi_common.h b/drivers/net/wireless/rsi/rsi_common.h
index d3fbe33d2324..a13f08fd8690 100644
--- a/drivers/net/wireless/rsi/rsi_common.h
+++ b/drivers/net/wireless/rsi/rsi_common.h
@@ -75,7 +75,6 @@ static inline int rsi_kill_thread(struct rsi_thread *handle)
atomic_inc(&handle->thread_done);
rsi_set_event(&handle->event);
- wait_for_completion(&handle->completion);
return kthread_stop(handle->task);
}
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 9685f9b8be07..a12710c917a1 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -512,16 +512,10 @@ EXPORT_SYMBOL(tegra_powergate_power_off);
*/
int tegra_powergate_is_powered(unsigned int id)
{
- int status;
-
if (!tegra_powergate_is_valid(id))
return -EINVAL;
- mutex_lock(&pmc->powergates_lock);
- status = tegra_powergate_state(id);
- mutex_unlock(&pmc->powergates_lock);
-
- return status;
+ return tegra_powergate_state(id);
}
/**
diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c
index 5836e5554433..d4c374cc4f74 100644
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
@@ -20,6 +20,13 @@ enum int3400_thermal_uuid {
INT3400_THERMAL_PASSIVE_1,
INT3400_THERMAL_ACTIVE,
INT3400_THERMAL_CRITICAL,
+ INT3400_THERMAL_ADAPTIVE_PERFORMANCE,
+ INT3400_THERMAL_EMERGENCY_CALL_MODE,
+ INT3400_THERMAL_PASSIVE_2,
+ INT3400_THERMAL_POWER_BOSS,
+ INT3400_THERMAL_VIRTUAL_SENSOR,
+ INT3400_THERMAL_COOLING_MODE,
+ INT3400_THERMAL_HARDWARE_DUTY_CYCLING,
INT3400_THERMAL_MAXIMUM_UUID,
};
@@ -27,6 +34,13 @@ static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
"3A95C389-E4B8-4629-A526-C52C88626BAE",
"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
+ "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D",
+ "5349962F-71E6-431D-9AE8-0A635B710AEE",
+ "9E04115A-AE87-4D1C-9500-0F3E340BFE75",
+ "F5A35014-C209-46A4-993A-EB56DE7530A1",
+ "6ED722A7-9240-48A5-B479-31EEF723D7CF",
+ "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531",
+ "BE84BABF-C4D4-403D-B495-3128FD44dAC1",
};
struct int3400_thermal_priv {
@@ -271,10 +285,9 @@ static int int3400_thermal_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
- if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
- int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
- int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
- }
+ int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
+ int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
+
priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
priv, &int3400_thermal_ops,
&int3400_thermal_params, 0, 0);
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index ffb474c49f0f..eb61a07fcbbc 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1261,7 +1261,7 @@ static void cdns_uart_console_write(struct console *co, const char *s,
*
* Return: 0 on success, negative errno otherwise.
*/
-static int __init cdns_uart_console_setup(struct console *co, char *options)
+static int cdns_uart_console_setup(struct console *co, char *options)
{
struct uart_port *port = &cdns_uart_port[co->index];
int baud = 9600;
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 072e7599583a..a8ff43068619 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -59,6 +59,8 @@ enum {
Opt_cache_loose, Opt_fscache, Opt_mmap,
/* Access options */
Opt_access, Opt_posixacl,
+ /* Lock timeout option */
+ Opt_locktimeout,
/* Error token */
Opt_err
};
@@ -78,6 +80,7 @@ static const match_table_t tokens = {
{Opt_cachetag, "cachetag=%s"},
{Opt_access, "access=%s"},
{Opt_posixacl, "posixacl"},
+ {Opt_locktimeout, "locktimeout=%u"},
{Opt_err, NULL}
};
@@ -126,6 +129,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
#ifdef CONFIG_9P_FSCACHE
v9ses->cachetag = NULL;
#endif
+ v9ses->session_lock_timeout = P9_LOCK_TIMEOUT;
if (!opts)
return 0;
@@ -298,6 +302,23 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
#endif
break;
+ case Opt_locktimeout:
+ r = match_int(&args[0], &option);
+ if (r < 0) {
+ p9_debug(P9_DEBUG_ERROR,
+ "integer field, but no integer?\n");
+ ret = r;
+ continue;
+ }
+ if (option < 1) {
+ p9_debug(P9_DEBUG_ERROR,
+ "locktimeout must be a greater than zero integer.\n");
+ ret = -EINVAL;
+ continue;
+ }
+ v9ses->session_lock_timeout = (long)option * HZ;
+ break;
+
default:
continue;
}
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 443d12e02043..ce6ca9f4f683 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -116,6 +116,7 @@ struct v9fs_session_info {
struct list_head slist; /* list of sessions registered with v9fs */
struct backing_dev_info bdi;
struct rw_semaphore rename_sem;
+ long session_lock_timeout; /* retry interval for blocking locks */
};
/* cache_validity flags */
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 48db9a9f13f9..cb6c4031af55 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -105,7 +105,6 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
int err = 0;
struct p9_fid *fid;
int buflen;
- int reclen = 0;
struct p9_rdir *rdir;
struct kvec kvec;
@@ -138,11 +137,10 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
while (rdir->head < rdir->tail) {
err = p9stat_read(fid->clnt, rdir->buf + rdir->head,
rdir->tail - rdir->head, &st);
- if (err) {
+ if (err <= 0) {
p9_debug(P9_DEBUG_VFS, "returned %d\n", err);
return -EIO;
}
- reclen = st.size+2;
over = !dir_emit(ctx, st.name, strlen(st.name),
v9fs_qid2ino(&st.qid), dt_type(&st));
@@ -150,8 +148,8 @@ static int v9fs_dir_readdir(struct file *file, struct dir_context *ctx)
if (over)
return 0;
- rdir->head += reclen;
- ctx->pos += reclen;
+ rdir->head += err;
+ ctx->pos += err;
}
}
}
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 2f035b15180e..79ff727254bb 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -154,6 +154,7 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
uint8_t status = P9_LOCK_ERROR;
int res = 0;
unsigned char fl_type;
+ struct v9fs_session_info *v9ses;
fid = filp->private_data;
BUG_ON(fid == NULL);
@@ -189,6 +190,8 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
if (IS_SETLKW(cmd))
flock.flags = P9_LOCK_FLAGS_BLOCK;
+ v9ses = v9fs_inode2v9ses(file_inode(filp));
+
/*
* if its a blocked request and we get P9_LOCK_BLOCKED as the status
* for lock request, keep on trying
@@ -202,7 +205,8 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
break;
if (status == P9_LOCK_BLOCKED && !IS_SETLKW(cmd))
break;
- if (schedule_timeout_interruptible(P9_LOCK_TIMEOUT) != 0)
+ if (schedule_timeout_interruptible(v9ses->session_lock_timeout)
+ != 0)
break;
/*
* p9_client_lock_dotl overwrites flock.client_id with the
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 57c938ffeb6e..a8a2fc9ae056 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -771,43 +771,50 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
} else if ((rc == -EACCES) && backup_cred(cifs_sb) &&
(strcmp(server->vals->version_string, SMB1_VERSION_STRING)
== 0)) {
- /*
- * For SMB2 and later the backup intent flag is already
- * sent if needed on open and there is no path based
- * FindFirst operation to use to retry with
- */
+ /*
+ * For SMB2 and later the backup intent flag is already
+ * sent if needed on open and there is no path based
+ * FindFirst operation to use to retry with
+ */
- srchinf = kzalloc(sizeof(struct cifs_search_info),
- GFP_KERNEL);
- if (srchinf == NULL) {
- rc = -ENOMEM;
- goto cgii_exit;
- }
+ srchinf = kzalloc(sizeof(struct cifs_search_info),
+ GFP_KERNEL);
+ if (srchinf == NULL) {
+ rc = -ENOMEM;
+ goto cgii_exit;
+ }
- srchinf->endOfSearch = false;
+ srchinf->endOfSearch = false;
+ if (tcon->unix_ext)
+ srchinf->info_level = SMB_FIND_FILE_UNIX;
+ else if ((tcon->ses->capabilities &
+ tcon->ses->server->vals->cap_nt_find) == 0)
+ srchinf->info_level = SMB_FIND_FILE_INFO_STANDARD;
+ else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
+ else /* no srvino useful for fallback to some netapp */
+ srchinf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
- srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
- CIFS_SEARCH_CLOSE_AT_END |
- CIFS_SEARCH_BACKUP_SEARCH;
+ srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
+ CIFS_SEARCH_CLOSE_AT_END |
+ CIFS_SEARCH_BACKUP_SEARCH;
- rc = CIFSFindFirst(xid, tcon, full_path,
- cifs_sb, NULL, srchflgs, srchinf, false);
- if (!rc) {
- data =
- (FILE_ALL_INFO *)srchinf->srch_entries_start;
+ rc = CIFSFindFirst(xid, tcon, full_path,
+ cifs_sb, NULL, srchflgs, srchinf, false);
+ if (!rc) {
+ data = (FILE_ALL_INFO *)srchinf->srch_entries_start;
- cifs_dir_info_to_fattr(&fattr,
- (FILE_DIRECTORY_INFO *)data, cifs_sb);
- fattr.cf_uniqueid = le64_to_cpu(
- ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
- validinum = true;
+ cifs_dir_info_to_fattr(&fattr,
+ (FILE_DIRECTORY_INFO *)data, cifs_sb);
+ fattr.cf_uniqueid = le64_to_cpu(
+ ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
+ validinum = true;
- cifs_buf_release(srchinf->ntwrk_buf_start);
- }
- kfree(srchinf);
- if (rc)
- goto cgii_exit;
+ cifs_buf_release(srchinf->ntwrk_buf_start);
+ }
+ kfree(srchinf);
+ if (rc)
+ goto cgii_exit;
} else
goto cgii_exit;
diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index 98c25b969ab8..7e93d5706bf6 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs/smb2maperror.c
@@ -1034,7 +1034,8 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
{STATUS_UNFINISHED_CONTEXT_DELETED, -EIO,
"STATUS_UNFINISHED_CONTEXT_DELETED"},
{STATUS_NO_TGT_REPLY, -EIO, "STATUS_NO_TGT_REPLY"},
- {STATUS_OBJECTID_NOT_FOUND, -EIO, "STATUS_OBJECTID_NOT_FOUND"},
+ /* Note that ENOATTTR and ENODATA are the same errno */
+ {STATUS_OBJECTID_NOT_FOUND, -ENODATA, "STATUS_OBJECTID_NOT_FOUND"},
{STATUS_NO_IP_ADDRESSES, -EIO, "STATUS_NO_IP_ADDRESSES"},
{STATUS_WRONG_CREDENTIAL_HANDLE, -EIO,
"STATUS_WRONG_CREDENTIAL_HANDLE"},
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 2880e017cd0a..2ce73287b53c 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -749,6 +749,13 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (!blk_queue_discard(q))
return -EOPNOTSUPP;
+ /*
+ * We haven't replayed the journal, so we cannot use our
+ * block-bitmap-guided storage zapping commands.
+ */
+ if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb))
+ return -EROFS;
+
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
sizeof(range)))
return -EFAULT;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 67b359629a66..aef2a24dc9f9 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -907,11 +907,18 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
memcpy(n_group_desc, o_group_desc,
EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *));
n_group_desc[gdb_num] = gdb_bh;
+
+ BUFFER_TRACE(gdb_bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, gdb_bh);
+ if (err) {
+ kvfree(n_group_desc);
+ brelse(gdb_bh);
+ return err;
+ }
+
EXT4_SB(sb)->s_group_desc = n_group_desc;
EXT4_SB(sb)->s_gdb_count++;
kvfree(o_group_desc);
- BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
return err;
}
@@ -2040,6 +2047,10 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
free_flex_gd(flex_gd);
if (resize_inode != NULL)
iput(resize_inode);
- ext4_msg(sb, KERN_INFO, "resized filesystem to %llu", n_blocks_count);
+ if (err)
+ ext4_warning(sb, "error (%d) occurred during "
+ "file system resize", err);
+ ext4_msg(sb, KERN_INFO, "resized filesystem to %llu",
+ ext4_blocks_count(es));
return err;
}
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 83a96334dc07..4ebe69572475 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1489,7 +1489,7 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi)
unsigned int segment_count_main;
unsigned int cp_pack_start_sum, cp_payload;
block_t user_block_count;
- int i;
+ int i, j;
total = le32_to_cpu(raw_super->segment_count);
fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
@@ -1530,11 +1530,43 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi)
if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
return 1;
+ for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
+ if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
+ le32_to_cpu(ckpt->cur_node_segno[j])) {
+ f2fs_msg(sbi->sb, KERN_ERR,
+ "Node segment (%u, %u) has the same "
+ "segno: %u", i, j,
+ le32_to_cpu(ckpt->cur_node_segno[i]));
+ return 1;
+ }
+ }
}
for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
return 1;
+ for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
+ if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
+ le32_to_cpu(ckpt->cur_data_segno[j])) {
+ f2fs_msg(sbi->sb, KERN_ERR,
+ "Data segment (%u, %u) has the same "
+ "segno: %u", i, j,
+ le32_to_cpu(ckpt->cur_data_segno[i]));
+ return 1;
+ }
+ }
+ }
+ for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
+ for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
+ if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
+ le32_to_cpu(ckpt->cur_data_segno[j])) {
+ f2fs_msg(sbi->sb, KERN_ERR,
+ "Data segment (%u) and Data segment (%u)"
+ " has the same segno: %u", i, j,
+ le32_to_cpu(ckpt->cur_node_segno[i]));
+ return 1;
+ }
+ }
}
sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
diff --git a/include/linux/atalk.h b/include/linux/atalk.h
index 73fd8b7e9534..af43ed404ff4 100644
--- a/include/linux/atalk.h
+++ b/include/linux/atalk.h
@@ -150,19 +150,29 @@ extern int sysctl_aarp_retransmit_limit;
extern int sysctl_aarp_resolve_time;
#ifdef CONFIG_SYSCTL
-extern void atalk_register_sysctl(void);
+extern int atalk_register_sysctl(void);
extern void atalk_unregister_sysctl(void);
#else
-#define atalk_register_sysctl() do { } while(0)
-#define atalk_unregister_sysctl() do { } while(0)
+static inline int atalk_register_sysctl(void)
+{
+ return 0;
+}
+static inline void atalk_unregister_sysctl(void)
+{
+}
#endif
#ifdef CONFIG_PROC_FS
extern int atalk_proc_init(void);
extern void atalk_proc_exit(void);
#else
-#define atalk_proc_init() ({ 0; })
-#define atalk_proc_exit() do { } while(0)
+static inline int atalk_proc_init(void)
+{
+ return 0;
+}
+static inline void atalk_proc_exit(void)
+{
+}
#endif /* CONFIG_PROC_FS */
#endif /* __LINUX_ATALK_H__ */
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 55ff5593c193..2228907d08ff 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -135,9 +135,9 @@ struct swap_extent {
/*
* Max bad pages in the new format..
*/
-#define __swapoffset(x) ((unsigned long)&((union swap_header *)0)->x)
#define MAX_SWAP_BADPAGES \
- ((__swapoffset(magic.magic) - __swapoffset(info.badpages)) / sizeof(int))
+ ((offsetof(union swap_header, magic.magic) - \
+ offsetof(union swap_header, info.badpages)) / sizeof(int))
enum {
SWP_USED = (1 << 0), /* is slot in swap_info[] used? */
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5cbb2eda80b5..7929526e96e2 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6616,6 +6616,7 @@ static void perf_event_mmap_output(struct perf_event *event,
struct perf_output_handle handle;
struct perf_sample_data sample;
int size = mmap_event->event_id.header.size;
+ u32 type = mmap_event->event_id.header.type;
int ret;
if (!perf_event_mmap_match(event, data))
@@ -6659,6 +6660,7 @@ static void perf_event_mmap_output(struct perf_event *event,
perf_output_end(&handle);
out:
mmap_event->event_id.header.size = size;
+ mmap_event->event_id.header.type = type;
}
static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index fd781a468f32..fb00cf30abd1 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -15,6 +15,7 @@
#include <linux/lockdep.h>
#include <linux/export.h>
#include <linux/sysctl.h>
+#include <linux/suspend.h>
#include <linux/utsname.h>
#include <trace/events/sched.h>
@@ -221,6 +222,28 @@ void reset_hung_task_detector(void)
}
EXPORT_SYMBOL_GPL(reset_hung_task_detector);
+static bool hung_detector_suspended;
+
+static int hungtask_pm_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu)
+{
+ switch (action) {
+ case PM_SUSPEND_PREPARE:
+ case PM_HIBERNATION_PREPARE:
+ case PM_RESTORE_PREPARE:
+ hung_detector_suspended = true;
+ break;
+ case PM_POST_SUSPEND:
+ case PM_POST_HIBERNATION:
+ case PM_POST_RESTORE:
+ hung_detector_suspended = false;
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_OK;
+}
+
/*
* kthread which checks for tasks stuck in D state
*/
@@ -235,7 +258,8 @@ static int watchdog(void *dummy)
long t = hung_timeout_jiffies(hung_last_checked, timeout);
if (t <= 0) {
- if (!atomic_xchg(&reset_hung_task, 0))
+ if (!atomic_xchg(&reset_hung_task, 0) &&
+ !hung_detector_suspended)
check_hung_uninterruptible_tasks(timeout);
hung_last_checked = jiffies;
continue;
@@ -249,6 +273,10 @@ static int watchdog(void *dummy)
static int __init hung_task_init(void)
{
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+
+ /* Disable hung task detector on suspend */
+ pm_notifier(hungtask_pm_notify, 0);
+
watchdog_task = kthread_run(watchdog, NULL, "khungtaskd");
return 0;
diff --git a/lib/div64.c b/lib/div64.c
index 7f345259c32f..c1c1a4c36dd5 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -102,7 +102,7 @@ u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
quot = div_u64_rem(dividend, divisor, &rem32);
*remainder = rem32;
} else {
- int n = 1 + fls(high);
+ int n = fls(high);
quot = div_u64(dividend >> n, divisor >> n);
if (quot != 0)
@@ -140,7 +140,7 @@ u64 div64_u64(u64 dividend, u64 divisor)
if (high == 0) {
quot = div_u64(dividend, divisor);
} else {
- int n = 1 + fls(high);
+ int n = fls(high);
quot = div_u64(dividend >> n, divisor >> n);
if (quot != 0)
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 145f80518064..7f1b45c082c9 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -570,9 +570,10 @@ int p9stat_read(struct p9_client *clnt, char *buf, int len, struct p9_wstat *st)
if (ret) {
p9_debug(P9_DEBUG_9P, "<<< p9stat_read failed: %d\n", ret);
trace_9p_protocol_dump(clnt, &fake_pdu);
+ return ret;
}
- return ret;
+ return fake_pdu.offset;
}
EXPORT_SYMBOL(p9stat_read);
diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index af46bc49e1e9..b5f84f428aa6 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -293,7 +293,7 @@ int __init atalk_proc_init(void)
goto out;
}
-void __exit atalk_proc_exit(void)
+void atalk_proc_exit(void)
{
remove_proc_entry("interface", atalk_proc_dir);
remove_proc_entry("route", atalk_proc_dir);
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 10d2bdce686e..e206d98b3b82 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1912,12 +1912,16 @@ static const char atalk_err_snap[] __initconst =
/* Called by proto.c on kernel start up */
static int __init atalk_init(void)
{
- int rc = proto_register(&ddp_proto, 0);
+ int rc;
- if (rc != 0)
+ rc = proto_register(&ddp_proto, 0);
+ if (rc)
goto out;
- (void)sock_register(&atalk_family_ops);
+ rc = sock_register(&atalk_family_ops);
+ if (rc)
+ goto out_proto;
+
ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv);
if (!ddp_dl)
printk(atalk_err_snap);
@@ -1925,12 +1929,33 @@ static int __init atalk_init(void)
dev_add_pack(<alk_packet_type);
dev_add_pack(&ppptalk_packet_type);
- register_netdevice_notifier(&ddp_notifier);
+ rc = register_netdevice_notifier(&ddp_notifier);
+ if (rc)
+ goto out_sock;
+
aarp_proto_init();
- atalk_proc_init();
- atalk_register_sysctl();
+ rc = atalk_proc_init();
+ if (rc)
+ goto out_aarp;
+
+ rc = atalk_register_sysctl();
+ if (rc)
+ goto out_proc;
out:
return rc;
+out_proc:
+ atalk_proc_exit();
+out_aarp:
+ aarp_cleanup_module();
+ unregister_netdevice_notifier(&ddp_notifier);
+out_sock:
+ dev_remove_pack(&ppptalk_packet_type);
+ dev_remove_pack(<alk_packet_type);
+ unregister_snap_client(ddp_dl);
+ sock_unregister(PF_APPLETALK);
+out_proto:
+ proto_unregister(&ddp_proto);
+ goto out;
}
module_init(atalk_init);
diff --git a/net/appletalk/sysctl_net_atalk.c b/net/appletalk/sysctl_net_atalk.c
index ebb864361f7a..4e6042e0fcac 100644
--- a/net/appletalk/sysctl_net_atalk.c
+++ b/net/appletalk/sysctl_net_atalk.c
@@ -44,9 +44,12 @@ static struct ctl_table atalk_table[] = {
static struct ctl_table_header *atalk_table_header;
-void atalk_register_sysctl(void)
+int __init atalk_register_sysctl(void)
{
atalk_table_header = register_net_sysctl(&init_net, "net/appletalk", atalk_table);
+ if (!atalk_table_header)
+ return -ENOMEM;
+ return 0;
}
void atalk_unregister_sysctl(void)
diff --git a/sound/drivers/opl3/opl3_voice.h b/sound/drivers/opl3/opl3_voice.h
index a371c075ac87..e26702559f61 100644
--- a/sound/drivers/opl3/opl3_voice.h
+++ b/sound/drivers/opl3/opl3_voice.h
@@ -41,7 +41,7 @@ void snd_opl3_timer_func(unsigned long data);
/* Prototypes for opl3_drums.c */
void snd_opl3_load_drums(struct snd_opl3 *opl3);
-void snd_opl3_drum_switch(struct snd_opl3 *opl3, int note, int on_off, int vel, struct snd_midi_channel *chan);
+void snd_opl3_drum_switch(struct snd_opl3 *opl3, int note, int vel, int on_off, struct snd_midi_channel *chan);
/* Prototypes for opl3_oss.c */
#ifdef CONFIG_SND_SEQUENCER_OSS
diff --git a/sound/isa/sb/sb8.c b/sound/isa/sb/sb8.c
index ad42d2364199..e75bfc511e3e 100644
--- a/sound/isa/sb/sb8.c
+++ b/sound/isa/sb/sb8.c
@@ -111,6 +111,10 @@ static int snd_sb8_probe(struct device *pdev, unsigned int dev)
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
+ if (!acard->fm_res) {
+ err = -EBUSY;
+ goto _err;
+ }
if (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 286f5e3686a3..d73ee11a32bd 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -1953,6 +1953,11 @@ static int snd_echo_create(struct snd_card *card,
}
chip->dsp_registers = (volatile u32 __iomem *)
ioremap_nocache(chip->dsp_registers_phys, sz);
+ if (!chip->dsp_registers) {
+ dev_err(chip->card->dev, "ioremap failed\n");
+ snd_echo_free(chip);
+ return -ENOMEM;
+ }
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index cb081ac59fd1..bd359a04cb94 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -112,7 +112,7 @@ Given a $HOME/.perfconfig like this:
[report]
# Defaults
- sort-order = comm,dso,symbol
+ sort_order = comm,dso,symbol
percent-limit = 0
queue-size = 0
children = true
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index e68c866ae798..cd2900ac473f 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1323,8 +1323,9 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
goto out_delete_evlist;
symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
- if (symbol__init(NULL) < 0)
- return -1;
+ status = symbol__init(NULL);
+ if (status < 0)
+ goto out_delete_evlist;
sort__setup_elide(stdout);
diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
index ea772d41e472..b5d0be524655 100644
--- a/tools/perf/tests/evsel-tp-sched.c
+++ b/tools/perf/tests/evsel-tp-sched.c
@@ -84,5 +84,6 @@ int test__perf_evsel__tp_sched_test(int subtest __maybe_unused)
if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
ret = -1;
+ perf_evsel__delete(evsel);
return ret;
}
diff --git a/tools/perf/tests/openat-syscall-all-cpus.c b/tools/perf/tests/openat-syscall-all-cpus.c
index c8d9592eb142..75d504e9eeaf 100644
--- a/tools/perf/tests/openat-syscall-all-cpus.c
+++ b/tools/perf/tests/openat-syscall-all-cpus.c
@@ -38,7 +38,7 @@ int test__openat_syscall_event_on_all_cpus(int subtest __maybe_unused)
if (IS_ERR(evsel)) {
tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "syscalls", "sys_enter_openat");
pr_debug("%s\n", errbuf);
- goto out_thread_map_delete;
+ goto out_cpu_map_delete;
}
if (perf_evsel__open(evsel, cpus, threads) < 0) {
@@ -112,6 +112,8 @@ int test__openat_syscall_event_on_all_cpus(int subtest __maybe_unused)
perf_evsel__close_fd(evsel, 1, threads->nr);
out_evsel_delete:
perf_evsel__delete(evsel);
+out_cpu_map_delete:
+ cpu_map__put(cpus);
out_thread_map_delete:
thread_map__put(threads);
return err;
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 993ef2762508..32aab95e1459 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -176,6 +176,7 @@ char *build_id_cache__linkname(const char *sbuild_id, char *bf, size_t size)
return bf;
}
+/* The caller is responsible to free the returned buffer. */
char *build_id_cache__origname(const char *sbuild_id)
{
char *linkname;
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 18dae745034f..1d66f8eab9f9 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -595,11 +595,10 @@ static int collect_config(const char *var, const char *value,
}
ret = set_value(item, value);
- return ret;
out_free:
free(key);
- return -1;
+ return ret;
}
static int perf_config_set__init(struct perf_config_set *set)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f7128c2a6386..a62f79558146 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1167,6 +1167,7 @@ void perf_evsel__exit(struct perf_evsel *evsel)
{
assert(list_empty(&evsel->node));
assert(evsel->evlist == NULL);
+ perf_evsel__free_counts(evsel);
perf_evsel__free_fd(evsel);
perf_evsel__free_id(evsel);
perf_evsel__free_config_terms(evsel);
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index ad613ea51434..82833ceba339 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1027,8 +1027,10 @@ int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
iter->evsel, al, max_stack_depth);
- if (err)
+ if (err) {
+ map__put(alm);
return err;
+ }
err = iter->ops->prepare_entry(iter, al);
if (err)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 14f111a10650..6193be6d7639 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2104,6 +2104,7 @@ void print_sdt_events(const char *subsys_glob, const char *event_glob,
printf(" %-50s [%s]\n", buf, "SDT event");
free(buf);
}
+ free(path);
} else
printf(" %-50s [%s]\n", nd->s, "SDT event");
if (nd2) {
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 5ec2de8f49b4..b4c5d96e54c1 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -3691,6 +3691,9 @@ int fork_it(char **argv)
signal(SIGQUIT, SIG_IGN);
if (waitpid(child_pid, &status, 0) == -1)
err(status, "waitpid");
+
+ if (WIFEXITED(status))
+ status = WEXITSTATUS(status);
}
/*
* n.b. fork_it() does not check for errors from for_all_cpus()
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