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Message-ID: <20161014115649.18293-1-palminha@synopsys.com>
Date: Fri, 14 Oct 2016 12:56:49 +0100
From: Carlos Palminha <CARLOS.PALMINHA@...opsys.com>
To: <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Carlos Palminha <CARLOS.PALMINHA@...opsys.com>
Subject: [PATCH v3] i2c: i2c-piix4: several coding style fixes
Fixed several coding style issues:
- '*' adjacent to data name
- assignment in if condition
- long comments blocks
- spaces with open parenthesis
- quoted string split across lines
Signed-off-by: Carlos Palminha <palminha@...opsys.com>
---
v2->v3:
- all the quoted strings are not coalesced
v1->v2:
- sent as one single patch
- fixed extra space in comment block
- fixed quoted string that was not coalesced into a single line
drivers/i2c/busses/i2c-piix4.c | 188 +++++++++++++++++++++++------------------
1 file changed, 104 insertions(+), 84 deletions(-)
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index c2268cd..6e22ddf 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -1,32 +1,32 @@
/*
- Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@....nl> and
- Philip Edelbrock <phil@...roedge.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-*/
+ * Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@....nl> and
+ * Philip Edelbrock <phil@...roedge.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
/*
- Supports:
- Intel PIIX4, 440MX
- Serverworks OSB4, CSB5, CSB6, HT-1000, HT-1100
- ATI IXP200, IXP300, IXP400, SB600, SB700/SP5100, SB800
- AMD Hudson-2, ML, CZ
- SMSC Victory66
-
- Note: we assume there can only be one device, with one or more
- SMBus interfaces.
- The device can register multiple i2c_adapters (up to PIIX4_MAX_ADAPTERS).
- For devices supporting multiple ports the i2c_adapter should provide
- an i2c_algorithm to access them.
-*/
+ * Supports:
+ * Intel PIIX4, 440MX
+ * Serverworks OSB4, CSB5, CSB6, HT-1000, HT-1100
+ * ATI IXP200, IXP300, IXP400, SB600, SB700/SP5100, SB800
+ * AMD Hudson-2, ML, CZ
+ * SMSC Victory66
+ *
+ * Note: we assume there can only be one device, with one or more
+ * SMBus interfaces.
+ * The device can register multiple i2c_adapters (up to PIIX4_MAX_ADAPTERS).
+ * For devices supporting multiple ports the i2c_adapter should provide
+ * an i2c_algorithm to access them.
+ */
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -97,19 +97,22 @@
/* insmod parameters */
-/* If force is set to anything different from 0, we forcibly enable the
- PIIX4. DANGEROUS! */
+/*
+ * If force is set to anything different from 0, we forcibly enable the
+ * PIIX4. DANGEROUS!
+ */
static int force;
-module_param (force, int, 0);
+module_param(force, int, 0);
MODULE_PARM_DESC(force, "Forcibly enable the PIIX4. DANGEROUS!");
-/* If force_addr is set to anything different from 0, we forcibly enable
- the PIIX4 at the given address. VERY DANGEROUS! */
+/*
+ * If force_addr is set to anything different from 0, we forcibly enable
+ * the PIIX4 at the given address. VERY DANGEROUS!
+ */
static int force_addr;
-module_param (force_addr, int, 0);
+module_param(force_addr, int, 0);
MODULE_PARM_DESC(force_addr,
- "Forcibly enable the PIIX4 at the given address. "
- "EXTREMELY DANGEROUS!");
+ "Forcibly enable the PIIX4 at the given address. EXTREMELY DANGEROUS!");
static int srvrworks_csb5_delay;
static struct pci_driver piix4_driver;
@@ -132,8 +135,10 @@ static const struct dmi_system_id piix4_dmi_blacklist[] = {
{ }
};
-/* The IBM entry is in a separate table because we only check it
- on Intel-based systems */
+/*
+ * The IBM entry is in a separate table because we only check it
+ * on Intel-based systems
+ */
static const struct dmi_system_id piix4_dmi_ibm[] = {
{
.ident = "IBM",
@@ -172,8 +177,10 @@ static int piix4_setup(struct pci_dev *PIIX4_dev,
(PIIX4_dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5))
srvrworks_csb5_delay = 1;
- /* On some motherboards, it was reported that accessing the SMBus
- caused severe hardware problems */
+ /*
+ * On some motherboards, it was reported that accessing the SMBus
+ * caused severe hardware problems
+ */
if (dmi_check_system(piix4_dmi_blacklist)) {
dev_err(&PIIX4_dev->dev,
"Accessing the SMBus on this system is unsafe!\n");
@@ -183,9 +190,8 @@ static int piix4_setup(struct pci_dev *PIIX4_dev,
/* Don't access SMBus on IBM systems which get corrupted eeproms */
if (dmi_check_system(piix4_dmi_ibm) &&
PIIX4_dev->vendor == PCI_VENDOR_ID_INTEL) {
- dev_err(&PIIX4_dev->dev, "IBM system detected; this module "
- "may corrupt your serial eeprom! Refusing to load "
- "module!\n");
+ dev_err(&PIIX4_dev->dev,
+ "IBM system detected; this module may corrupt your serial eeprom! Refusing to load module!\n");
return -EPERM;
}
@@ -196,10 +202,9 @@ static int piix4_setup(struct pci_dev *PIIX4_dev,
} else {
pci_read_config_word(PIIX4_dev, SMBBA, &piix4_smba);
piix4_smba &= 0xfff0;
- if(piix4_smba == 0) {
- dev_err(&PIIX4_dev->dev, "SMBus base address "
- "uninitialized - upgrade BIOS or use "
- "force_addr=0xaddr\n");
+ if (piix4_smba == 0) {
+ dev_err(&PIIX4_dev->dev,
+ "SMBus base address uninitialized upgrade BIOS or use force_addr=0xaddr\n");
return -ENODEV;
}
}
@@ -215,14 +220,17 @@ static int piix4_setup(struct pci_dev *PIIX4_dev,
pci_read_config_byte(PIIX4_dev, SMBHSTCFG, &temp);
- /* If force_addr is set, we program the new address here. Just to make
- sure, we disable the PIIX4 first. */
+ /*
+ * If force_addr is set, we program the new address here. Just to make
+ * sure, we disable the PIIX4 first.
+ */
if (force_addr) {
pci_write_config_byte(PIIX4_dev, SMBHSTCFG, temp & 0xfe);
pci_write_config_word(PIIX4_dev, SMBBA, piix4_smba);
pci_write_config_byte(PIIX4_dev, SMBHSTCFG, temp | 0x01);
- dev_info(&PIIX4_dev->dev, "WARNING: SMBus interface set to "
- "new address %04x!\n", piix4_smba);
+ dev_info(&PIIX4_dev->dev,
+ "WARNING: SMBus interface set to new address %04x!\n",
+ piix4_smba);
} else if ((temp & 1) == 0) {
if (force) {
/* This should never need to be done, but has been
@@ -250,8 +258,8 @@ static int piix4_setup(struct pci_dev *PIIX4_dev,
else if ((temp & 0x0E) == 0)
dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n");
else
- dev_err(&PIIX4_dev->dev, "Illegal Interrupt configuration "
- "(or code out of date)!\n");
+ dev_err(&PIIX4_dev->dev,
+ "Illegal Interrupt config (or code out of date)!\n");
pci_read_config_byte(PIIX4_dev, SMBREV, &temp);
dev_info(&PIIX4_dev->dev,
@@ -270,8 +278,8 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev,
/* SB800 and later SMBus does not support forcing address */
if (force || force_addr) {
- dev_err(&PIIX4_dev->dev, "SMBus does not support "
- "forcing address!\n");
+ dev_err(&PIIX4_dev->dev,
+ "SMBus does not support forcing address!\n");
return -EINVAL;
}
@@ -328,8 +336,9 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev,
/* Request the SMBus I2C bus config region */
if (!request_region(piix4_smba + i2ccfg_offset, 1, "i2ccfg")) {
- dev_err(&PIIX4_dev->dev, "SMBus I2C bus config region "
- "0x%x already in use!\n", piix4_smba + i2ccfg_offset);
+ dev_err(&PIIX4_dev->dev,
+ "SMBus I2C bus config region 0x%x already in use!\n",
+ piix4_smba + i2ccfg_offset);
release_region(piix4_smba, SMBIOSIZE);
return -EBUSY;
}
@@ -369,8 +378,10 @@ static int piix4_setup_aux(struct pci_dev *PIIX4_dev,
const struct pci_device_id *id,
unsigned short base_reg_addr)
{
- /* Set up auxiliary SMBus controllers found on some
- * AMD chipsets e.g. SP5100 (SB700 derivative) */
+ /*
+ * Set up auxiliary SMBus controllers found on some
+ * AMD chipsets e.g. SP5100 (SB700 derivative)
+ */
unsigned short piix4_smba;
@@ -393,8 +404,9 @@ static int piix4_setup_aux(struct pci_dev *PIIX4_dev,
return -ENODEV;
if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) {
- dev_err(&PIIX4_dev->dev, "Auxiliary SMBus region 0x%x "
- "already in use!\n", piix4_smba);
+ dev_err(&PIIX4_dev->dev,
+ "Auxiliary SMBus region 0x%x already in use!\n",
+ piix4_smba);
return -EBUSY;
}
@@ -413,17 +425,19 @@ static int piix4_transaction(struct i2c_adapter *piix4_adapter)
int result = 0;
int timeout = 0;
- dev_dbg(&piix4_adapter->dev, "Transaction (pre): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT),
- inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
- inb_p(SMBHSTDAT1));
+ dev_dbg(&piix4_adapter->dev,
+ "Transaction (pre): CNT=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n",
+ inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1));
/* Make sure the SMBus host is ready to start transmitting */
- if ((temp = inb_p(SMBHSTSTS)) != 0x00) {
- dev_dbg(&piix4_adapter->dev, "SMBus busy (%02x). "
- "Resetting...\n", temp);
+ temp = inb_p(SMBHSTSTS);
+ if (temp != 0x00) {
+ dev_dbg(&piix4_adapter->dev,
+ "SMBus busy (%02x). Resetting...\n", temp);
outb_p(temp, SMBHSTSTS);
- if ((temp = inb_p(SMBHSTSTS)) != 0x00) {
+ temp = inb_p(SMBHSTSTS);
+ if (temp != 0x00) {
dev_err(&piix4_adapter->dev, "Failed! (%02x)\n", temp);
return -EBUSY;
} else {
@@ -434,7 +448,10 @@ static int piix4_transaction(struct i2c_adapter *piix4_adapter)
/* start the transaction by setting bit 6 */
outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT);
- /* We will always wait for a fraction of a second! (See PIIX4 docs errata) */
+ /*
+ * We will always wait for a fraction of a second!
+ * (See PIIX4 docs errata)
+ */
if (srvrworks_csb5_delay) /* Extra delay for SERVERWORKS_CSB5 */
msleep(2);
else
@@ -457,8 +474,8 @@ static int piix4_transaction(struct i2c_adapter *piix4_adapter)
if (temp & 0x08) {
result = -EIO;
- dev_dbg(&piix4_adapter->dev, "Bus collision! SMBus may be "
- "locked until next hard reset. (sorry!)\n");
+ dev_dbg(&piix4_adapter->dev,
+ "Bus collision! SMBus may be locked until next hard reset. (sorry!)\n");
/* Clock stops and slave is stuck in mid-transmission */
}
@@ -470,21 +487,22 @@ static int piix4_transaction(struct i2c_adapter *piix4_adapter)
if (inb_p(SMBHSTSTS) != 0x00)
outb_p(inb(SMBHSTSTS), SMBHSTSTS);
- if ((temp = inb_p(SMBHSTSTS)) != 0x00) {
- dev_err(&piix4_adapter->dev, "Failed reset at end of "
- "transaction (%02x)\n", temp);
+ temp = inb_p(SMBHSTSTS);
+ if (temp != 0x00) {
+ dev_err(&piix4_adapter->dev,
+ "Failed reset at end of transaction (%02x)\n", temp);
}
- dev_dbg(&piix4_adapter->dev, "Transaction (post): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT),
- inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
- inb_p(SMBHSTDAT1));
+ dev_dbg(&piix4_adapter->dev,
+ "Transaction (post): CNT=%02x, CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n",
+ inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1));
return result;
}
/* Return negative errno on error. */
-static s32 piix4_access(struct i2c_adapter * adap, u16 addr,
+static s32 piix4_access(struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
- u8 command, int size, union i2c_smbus_data * data)
+ u8 command, int size, union i2c_smbus_data *data)
{
struct i2c_piix4_adapdata *adapdata = i2c_get_adapdata(adap);
unsigned short piix4_smba = adapdata->smba;
@@ -649,7 +667,7 @@ static const struct pci_device_id piix4_ids[] = {
{ 0, }
};
-MODULE_DEVICE_TABLE (pci, piix4_ids);
+MODULE_DEVICE_TABLE(pci, piix4_ids);
static struct i2c_adapter *piix4_main_adapters[PIIX4_MAX_ADAPTERS];
static struct i2c_adapter *piix4_aux_adapter;
@@ -801,8 +819,10 @@ static int piix4_probe(struct pci_dev *dev, const struct pci_device_id *id)
}
if (retval > 0) {
- /* Try to add the aux adapter if it exists,
- * piix4_add_adapter will clean up if this fails */
+ /*
+ * Try to add the aux adapter if it exists,
+ * piix4_add_adapter will clean up if this fails
+ */
piix4_add_adapter(dev, retval, false, 0,
is_sb800 ? piix4_aux_port_name_sb800 : "",
&piix4_aux_adapter);
@@ -853,7 +873,7 @@ static struct pci_driver piix4_driver = {
module_pci_driver(piix4_driver);
-MODULE_AUTHOR("Frodo Looijaard <frodol@....nl> and "
- "Philip Edelbrock <phil@...roedge.com>");
+MODULE_AUTHOR("Frodo Looijaard <frodol@....nl>");
+MODULE_AUTHOR("Philip Edelbrock <phil@...roedge.com>");
MODULE_DESCRIPTION("PIIX4 SMBus driver");
MODULE_LICENSE("GPL");
--
2.9.3
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