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Message-ID: <20170315030439.GB24000@kroah.com>
Date: Wed, 15 Mar 2017 11:04:39 +0800
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 4.9.15
diff --git a/Makefile b/Makefile
index 5e7706e94622..03df4fcacdf2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 14
+SUBLEVEL = 15
EXTRAVERSION =
NAME = Roaring Lionus
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 602af692efdc..6bcbbece082b 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -89,7 +89,8 @@ extern void execve_tail(void);
* User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
*/
-#define TASK_SIZE_OF(tsk) ((tsk)->mm->context.asce_limit)
+#define TASK_SIZE_OF(tsk) ((tsk)->mm ? \
+ (tsk)->mm->context.asce_limit : TASK_MAX_SIZE)
#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \
(1UL << 30) : (1UL << 41))
#define TASK_SIZE TASK_SIZE_OF(current)
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index f9293bfefb7f..408b4f4fda0f 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -329,7 +329,11 @@ static void *nt_init_name(void *buf, Elf64_Word type, void *desc, int d_len,
static inline void *nt_init(void *buf, Elf64_Word type, void *desc, int d_len)
{
- return nt_init_name(buf, type, desc, d_len, KEXEC_CORE_NOTE_NAME);
+ const char *note_name = "LINUX";
+
+ if (type == NT_PRPSINFO || type == NT_PRSTATUS || type == NT_PRFPREG)
+ note_name = KEXEC_CORE_NOTE_NAME;
+ return nt_init_name(buf, type, desc, d_len, note_name);
}
/*
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index d027f2eb3559..e974e53ab597 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -819,10 +819,10 @@ static void __init setup_randomness(void)
{
struct sysinfo_3_2_2 *vmms;
- vmms = (struct sysinfo_3_2_2 *) alloc_page(GFP_KERNEL);
- if (vmms && stsi(vmms, 3, 2, 2) == 0 && vmms->count)
- add_device_randomness(&vmms, vmms->count);
- free_page((unsigned long) vmms);
+ vmms = (struct sysinfo_3_2_2 *) memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (stsi(vmms, 3, 2, 2) == 0 && vmms->count)
+ add_device_randomness(&vmms->vm, sizeof(vmms->vm[0]) * vmms->count);
+ memblock_free((unsigned long) vmms, PAGE_SIZE);
}
/*
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 47a1de77b18d..5ba494ed18c1 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -442,6 +442,9 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
struct kvm_memory_slot *memslot;
int is_dirty = 0;
+ if (kvm_is_ucontrol(kvm))
+ return -EINVAL;
+
mutex_lock(&kvm->slots_lock);
r = -EINVAL;
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 6fa85944af83..fc5abff9b7fd 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -188,7 +188,7 @@ static inline void __native_flush_tlb_single(unsigned long addr)
static inline void __flush_tlb_all(void)
{
- if (static_cpu_has(X86_FEATURE_PGE))
+ if (boot_cpu_has(X86_FEATURE_PGE))
__flush_tlb_global();
else
__flush_tlb();
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 64774f419c72..69b8f8a5ecb0 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3693,7 +3693,7 @@ static void fix_rmode_seg(int seg, struct kvm_segment *save)
}
vmcs_write16(sf->selector, var.selector);
- vmcs_write32(sf->base, var.base);
+ vmcs_writel(sf->base, var.base);
vmcs_write32(sf->limit, var.limit);
vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
}
@@ -8202,7 +8202,7 @@ static void kvm_flush_pml_buffers(struct kvm *kvm)
static void vmx_dump_sel(char *name, uint32_t sel)
{
pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n",
- name, vmcs_read32(sel),
+ name, vmcs_read16(sel),
vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR),
vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR),
vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR));
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 0d4fb3ebbbac..1680768d392c 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -120,6 +120,11 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
return 0;
}
+ if (!pte_allows_gup(pte_val(pte), write)) {
+ pte_unmap(ptep);
+ return 0;
+ }
+
if (pte_devmap(pte)) {
pgmap = get_dev_pagemap(pte_pfn(pte), pgmap);
if (unlikely(!pgmap)) {
@@ -127,8 +132,7 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
pte_unmap(ptep);
return 0;
}
- } else if (!pte_allows_gup(pte_val(pte), write) ||
- pte_special(pte)) {
+ } else if (pte_special(pte)) {
pte_unmap(ptep);
return 0;
}
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 32cdc2c52e98..a45d32abea26 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -133,6 +133,8 @@ static int __init parse_tag_initrd(const bp_tag_t* tag)
__tagtable(BP_TAG_INITRD, parse_tag_initrd);
+#endif /* CONFIG_BLK_DEV_INITRD */
+
#ifdef CONFIG_OF
static int __init parse_tag_fdt(const bp_tag_t *tag)
@@ -145,8 +147,6 @@ __tagtable(BP_TAG_FDT, parse_tag_fdt);
#endif /* CONFIG_OF */
-#endif /* CONFIG_BLK_DEV_INITRD */
-
static int __init parse_tag_cmdline(const bp_tag_t* tag)
{
strlcpy(command_line, (char *)(tag->data), COMMAND_LINE_SIZE);
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 6eb6733a7a5c..d1664df001f8 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1603,7 +1603,7 @@ static size_t sizeof_nfit_set_info(int num_mappings)
+ num_mappings * sizeof(struct nfit_set_info_map);
}
-static int cmp_map(const void *m0, const void *m1)
+static int cmp_map_compat(const void *m0, const void *m1)
{
const struct nfit_set_info_map *map0 = m0;
const struct nfit_set_info_map *map1 = m1;
@@ -1612,6 +1612,14 @@ static int cmp_map(const void *m0, const void *m1)
sizeof(u64));
}
+static int cmp_map(const void *m0, const void *m1)
+{
+ const struct nfit_set_info_map *map0 = m0;
+ const struct nfit_set_info_map *map1 = m1;
+
+ return map0->region_offset - map1->region_offset;
+}
+
/* Retrieve the nth entry referencing this spa */
static struct acpi_nfit_memory_map *memdev_from_spa(
struct acpi_nfit_desc *acpi_desc, u16 range_index, int n)
@@ -1667,6 +1675,12 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc,
sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map),
cmp_map, NULL);
nd_set->cookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0);
+
+ /* support namespaces created with the wrong sort order */
+ sort(&info->mapping[0], nr, sizeof(struct nfit_set_info_map),
+ cmp_map_compat, NULL);
+ nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0);
+
ndr_desc->nd_set = nd_set;
devm_kfree(dev, info);
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index fadba88745dc..b793853ff05f 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -94,6 +94,7 @@ static const struct usb_device_id ath3k_table[] = {
{ USB_DEVICE(0x04CA, 0x300f) },
{ USB_DEVICE(0x04CA, 0x3010) },
{ USB_DEVICE(0x04CA, 0x3014) },
+ { USB_DEVICE(0x04CA, 0x3018) },
{ USB_DEVICE(0x0930, 0x0219) },
{ USB_DEVICE(0x0930, 0x021c) },
{ USB_DEVICE(0x0930, 0x0220) },
@@ -162,6 +163,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = {
{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 2f633df9f4e6..dd220fad366c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -209,6 +209,7 @@ static const struct usb_device_id blacklist_table[] = {
{ USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
{ USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index b9629b2bfc05..d1651a50c349 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -298,6 +298,7 @@ struct sdma_engine;
* @event_id1 for channels that use 2 events
* @word_size peripheral access size
* @buf_tail ID of the buffer that was processed
+ * @buf_ptail ID of the previous buffer that was processed
* @num_bd max NUM_BD. number of descriptors currently handling
*/
struct sdma_channel {
@@ -309,6 +310,7 @@ struct sdma_channel {
unsigned int event_id1;
enum dma_slave_buswidth word_size;
unsigned int buf_tail;
+ unsigned int buf_ptail;
unsigned int num_bd;
unsigned int period_len;
struct sdma_buffer_descriptor *bd;
@@ -700,6 +702,8 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac)
sdmac->chn_real_count = bd->mode.count;
bd->mode.status |= BD_DONE;
bd->mode.count = sdmac->period_len;
+ sdmac->buf_ptail = sdmac->buf_tail;
+ sdmac->buf_tail = (sdmac->buf_tail + 1) % sdmac->num_bd;
/*
* The callback is called from the interrupt context in order
@@ -710,9 +714,6 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac)
dmaengine_desc_get_callback_invoke(&sdmac->desc, NULL);
- sdmac->buf_tail++;
- sdmac->buf_tail %= sdmac->num_bd;
-
if (error)
sdmac->status = old_status;
}
@@ -1186,6 +1187,8 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
sdmac->flags = 0;
sdmac->buf_tail = 0;
+ sdmac->buf_ptail = 0;
+ sdmac->chn_real_count = 0;
dev_dbg(sdma->dev, "setting up %d entries for channel %d.\n",
sg_len, channel);
@@ -1288,6 +1291,8 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
sdmac->status = DMA_IN_PROGRESS;
sdmac->buf_tail = 0;
+ sdmac->buf_ptail = 0;
+ sdmac->chn_real_count = 0;
sdmac->period_len = period_len;
sdmac->flags |= IMX_DMA_SG_LOOP;
@@ -1385,7 +1390,7 @@ static enum dma_status sdma_tx_status(struct dma_chan *chan,
u32 residue;
if (sdmac->flags & IMX_DMA_SG_LOOP)
- residue = (sdmac->num_bd - sdmac->buf_tail) *
+ residue = (sdmac->num_bd - sdmac->buf_ptail) *
sdmac->period_len - sdmac->chn_real_count;
else
residue = sdmac->chn_count - sdmac->chn_real_count;
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 7ddc32127d88..64a1df62cc65 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -3814,9 +3814,15 @@ static void dce_v11_0_encoder_add(struct amdgpu_device *adev,
default:
encoder->possible_crtcs = 0x3;
break;
+ case 3:
+ encoder->possible_crtcs = 0x7;
+ break;
case 4:
encoder->possible_crtcs = 0xf;
break;
+ case 5:
+ encoder->possible_crtcs = 0x1f;
+ break;
case 6:
encoder->possible_crtcs = 0x3f;
break;
diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
index 810c51d92b99..30672a3df8a9 100644
--- a/drivers/gpu/drm/ast/ast_post.c
+++ b/drivers/gpu/drm/ast/ast_post.c
@@ -58,13 +58,9 @@ bool ast_is_vga_enabled(struct drm_device *dev)
/* TODO 1180 */
} else {
ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT);
- if (ch) {
- ast_open_key(ast);
- ch = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0xff);
- return ch & 0x04;
- }
+ return !!(ch & 0x01);
}
- return 0;
+ return false;
}
static const u8 extreginfo[] = { 0x0f, 0x04, 0x1c, 0xff };
@@ -375,8 +371,8 @@ void ast_post_gpu(struct drm_device *dev)
pci_write_config_dword(ast->dev->pdev, 0x04, reg);
ast_enable_vga(dev);
- ast_enable_mmio(dev);
ast_open_key(ast);
+ ast_enable_mmio(dev);
ast_set_def_ext_reg(dev);
if (ast->chip == AST2300 || ast->chip == AST2400)
@@ -1630,12 +1626,44 @@ static void ast_init_dram_2300(struct drm_device *dev)
temp |= 0x73;
ast_write32(ast, 0x12008, temp);
+ param.dram_freq = 396;
param.dram_type = AST_DDR3;
+ temp = ast_mindwm(ast, 0x1e6e2070);
if (temp & 0x01000000)
param.dram_type = AST_DDR2;
- param.dram_chipid = ast->dram_type;
- param.dram_freq = ast->mclk;
- param.vram_size = ast->vram_size;
+ switch (temp & 0x18000000) {
+ case 0:
+ param.dram_chipid = AST_DRAM_512Mx16;
+ break;
+ default:
+ case 0x08000000:
+ param.dram_chipid = AST_DRAM_1Gx16;
+ break;
+ case 0x10000000:
+ param.dram_chipid = AST_DRAM_2Gx16;
+ break;
+ case 0x18000000:
+ param.dram_chipid = AST_DRAM_4Gx16;
+ break;
+ }
+ switch (temp & 0x0c) {
+ default:
+ case 0x00:
+ param.vram_size = AST_VIDMEM_SIZE_8M;
+ break;
+
+ case 0x04:
+ param.vram_size = AST_VIDMEM_SIZE_16M;
+ break;
+
+ case 0x08:
+ param.vram_size = AST_VIDMEM_SIZE_32M;
+ break;
+
+ case 0x0c:
+ param.vram_size = AST_VIDMEM_SIZE_64M;
+ break;
+ }
if (param.dram_type == AST_DDR3) {
get_ddr3_info(ast, ¶m);
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index a05bb3891119..2e42a0584a84 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -362,7 +362,7 @@ mode_fixup(struct drm_atomic_state *state)
struct drm_connector *connector;
struct drm_connector_state *conn_state;
int i;
- bool ret;
+ int ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (!crtc_state->mode_changed &&
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index ec77bd3e1f08..7491180698d1 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -145,6 +145,9 @@ static struct edid_quirk {
/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
+
+ /* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/
+ { "ETR", 13896, EDID_QUIRK_FORCE_8BPC },
};
/*
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 6c75e62c0b22..6a48d6637e5c 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -848,6 +848,9 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
if (!drm_fbdev_emulation)
return;
+ cancel_work_sync(&fb_helper->resume_work);
+ cancel_work_sync(&fb_helper->dirty_work);
+
if (!list_empty(&fb_helper->kernel_fb_list)) {
list_del(&fb_helper->kernel_fb_list);
if (list_empty(&kernel_fb_helper_list)) {
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 9a71ed546b90..f46aac1e85fb 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -415,6 +415,11 @@ int i915_gem_init_stolen(struct drm_device *dev)
mutex_init(&dev_priv->mm.stolen_lock);
+ if (intel_vgpu_active(dev_priv)) {
+ DRM_INFO("iGVT-g active, disabling use of stolen memory\n");
+ return 0;
+ }
+
#ifdef CONFIG_INTEL_IOMMU
if (intel_iommu_gfx_mapped && INTEL_INFO(dev)->gen < 8) {
DRM_INFO("DMAR active, disabling use of stolen memory\n");
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 055525013d2f..7b06280b23aa 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2832,6 +2832,9 @@ static void vlv_detach_power_sequencer(struct intel_dp *intel_dp)
enum pipe pipe = intel_dp->pps_pipe;
i915_reg_t pp_on_reg = PP_ON_DELAYS(pipe);
+ if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B))
+ return;
+
edp_panel_vdd_off_sync(intel_dp);
/*
@@ -2859,9 +2862,6 @@ static void vlv_steal_power_sequencer(struct drm_device *dev,
lockdep_assert_held(&dev_priv->pps_mutex);
- if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B))
- return;
-
for_each_intel_encoder(dev, encoder) {
struct intel_dp *intel_dp;
enum port port;
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 7acbbbf97833..4534e4cadccf 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -1031,7 +1031,18 @@ int intel_opregion_setup(struct drm_i915_private *dev_priv)
opregion->vbt_size = vbt_size;
} else {
vbt = base + OPREGION_VBT_OFFSET;
- vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;
+ /*
+ * The VBT specification says that if the ASLE ext
+ * mailbox is not used its area is reserved, but
+ * on some CHT boards the VBT extends into the
+ * ASLE ext area. Allow this even though it is
+ * against the spec, so we do not end up rejecting
+ * the VBT on those boards (and end up not finding the
+ * LCD panel because of this).
+ */
+ vbt_size = (mboxes & MBOX_ASLE_EXT) ?
+ OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
+ vbt_size -= OPREGION_VBT_OFFSET;
if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
opregion->vbt = vbt;
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 8fc088843e55..89cf0090feac 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -98,6 +98,8 @@
/* TVE_TST_MODE_REG */
#define TVE_TVDAC_TEST_MODE_MASK (0x7 << 0)
+#define IMX_TVE_DAC_VOLTAGE 2750000
+
enum {
TVE_MODE_TVOUT,
TVE_MODE_VGA,
@@ -628,9 +630,8 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
tve->dac_reg = devm_regulator_get(dev, "dac");
if (!IS_ERR(tve->dac_reg)) {
- ret = regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
- if (ret)
- return ret;
+ if (regulator_get_voltage(tve->dac_reg) != IMX_TVE_DAC_VOLTAGE)
+ dev_warn(dev, "dac voltage is not %d uV\n", IMX_TVE_DAC_VOLTAGE);
ret = regulator_enable(tve->dac_reg);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index fc6217dfe401..35cc16f9fec9 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1654,7 +1654,6 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
struct ttm_buffer_object *bo;
int ret = -EBUSY;
int put_count;
- uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM);
spin_lock(&glob->lru_lock);
list_for_each_entry(bo, &glob->swap_lru, swap) {
@@ -1685,7 +1684,8 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
* Move to system cached
*/
- if ((bo->mem.placement & swap_placement) != swap_placement) {
+ if (bo->mem.mem_type != TTM_PL_SYSTEM ||
+ bo->ttm->caching_state != tt_cached) {
struct ttm_mem_reg evict_mem;
evict_mem = bo->mem;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 18061a4bc2f2..36005bdf3749 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -199,9 +199,14 @@ static const struct drm_ioctl_desc vmw_ioctls[] = {
VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
vmw_present_readback_ioctl,
DRM_MASTER | DRM_AUTH),
+ /*
+ * The permissions of the below ioctl are overridden in
+ * vmw_generic_ioctl(). We require either
+ * DRM_MASTER or capable(CAP_SYS_ADMIN).
+ */
VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
vmw_kms_update_layout_ioctl,
- DRM_MASTER | DRM_CONTROL_ALLOW),
+ DRM_RENDER_ALLOW),
VMW_IOCTL_DEF(VMW_CREATE_SHADER,
vmw_shader_define_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
@@ -1125,6 +1130,10 @@ static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
return (long) vmw_execbuf_ioctl(dev, arg, file_priv,
_IOC_SIZE(cmd));
+ } else if (nr == DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT) {
+ if (!drm_is_current_master(file_priv) &&
+ !capable(CAP_SYS_ADMIN))
+ return -EACCES;
}
if (unlikely(ioctl->cmd != cmd))
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 1e59a486bba8..59ff4197173a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -41,9 +41,9 @@
#include <drm/ttm/ttm_module.h>
#include "vmwgfx_fence.h"
-#define VMWGFX_DRIVER_DATE "20160210"
+#define VMWGFX_DRIVER_DATE "20170221"
#define VMWGFX_DRIVER_MAJOR 2
-#define VMWGFX_DRIVER_MINOR 11
+#define VMWGFX_DRIVER_MINOR 12
#define VMWGFX_DRIVER_PATCHLEVEL 0
#define VMWGFX_FILE_PAGE_OFFSET 0x00100000
#define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 6e49a4dd99c0..e0a8216ecf2b 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -220,7 +220,7 @@ int hv_init(void)
/* See if the hypercall page is already set */
rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
- virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC);
+ virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_RX);
if (!virtaddr)
goto cleanup;
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index 729b0696626e..d61fd2c727c0 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -165,8 +165,6 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
int err;
int i;
struct mlx5_wqe_srq_next_seg *next;
- int page_shift;
- int npages;
err = mlx5_db_alloc(dev->mdev, &srq->db);
if (err) {
@@ -179,7 +177,6 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
err = -ENOMEM;
goto err_db;
}
- page_shift = srq->buf.page_shift;
srq->head = 0;
srq->tail = srq->msrq.max - 1;
@@ -191,10 +188,8 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
cpu_to_be16((i + 1) & (srq->msrq.max - 1));
}
- npages = DIV_ROUND_UP(srq->buf.npages, 1 << (page_shift - PAGE_SHIFT));
- mlx5_ib_dbg(dev, "buf_size %d, page_shift %d, npages %d, calc npages %d\n",
- buf_size, page_shift, srq->buf.npages, npages);
- in->pas = mlx5_vzalloc(sizeof(*in->pas) * npages);
+ mlx5_ib_dbg(dev, "srq->buf.page_shift = %d\n", srq->buf.page_shift);
+ in->pas = mlx5_vzalloc(sizeof(*in->pas) * srq->buf.npages);
if (!in->pas) {
err = -ENOMEM;
goto err_buf;
@@ -210,7 +205,7 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
}
srq->wq_sig = !!srq_signature;
- in->log_page_size = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
+ in->log_page_size = srq->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT;
if (MLX5_CAP_GEN(dev->mdev, cqe_version) == MLX5_CQE_VERSION_V1 &&
in->type == IB_SRQT_XRC)
in->user_index = MLX5_IB_DEFAULT_UIDX;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 81a8080c18b3..0616a65f0d78 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1511,12 +1511,14 @@ static ssize_t set_mode(struct device *d, struct device_attribute *attr,
ret = ipoib_set_mode(dev, buf);
- rtnl_unlock();
-
- if (!ret)
- return count;
+ /* The assumption is that the function ipoib_set_mode returned
+ * with the rtnl held by it, if not the value -EBUSY returned,
+ * then no need to rtnl_unlock
+ */
+ if (ret != -EBUSY)
+ rtnl_unlock();
- return ret;
+ return (!ret || ret == -EBUSY) ? count : ret;
}
static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO, show_mode, set_mode);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index b58d9dca5c93..3ef7b8f049c4 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -468,8 +468,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM;
ipoib_flush_paths(dev);
- rtnl_lock();
- return 0;
+ return (!rtnl_trylock()) ? -EBUSY : 0;
}
if (!strcmp(buf, "datagram\n")) {
@@ -478,8 +477,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu));
rtnl_unlock();
ipoib_flush_paths(dev);
- rtnl_lock();
- return 0;
+ return (!rtnl_trylock()) ? -EBUSY : 0;
}
return -EINVAL;
@@ -703,6 +701,14 @@ int ipoib_check_sm_sendonly_fullmember_support(struct ipoib_dev_priv *priv)
return ret;
}
+static void push_pseudo_header(struct sk_buff *skb, const char *daddr)
+{
+ struct ipoib_pseudo_header *phdr;
+
+ phdr = (struct ipoib_pseudo_header *)skb_push(skb, sizeof(*phdr));
+ memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
+}
+
void ipoib_flush_paths(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
@@ -927,8 +933,7 @@ static void neigh_add_path(struct sk_buff *skb, u8 *daddr,
}
if (skb_queue_len(&neigh->queue) <
IPOIB_MAX_PATH_REC_QUEUE) {
- /* put pseudoheader back on for next time */
- skb_push(skb, IPOIB_PSEUDO_LEN);
+ push_pseudo_header(skb, neigh->daddr);
__skb_queue_tail(&neigh->queue, skb);
} else {
ipoib_warn(priv, "queue length limit %d. Packet drop.\n",
@@ -946,10 +951,12 @@ static void neigh_add_path(struct sk_buff *skb, u8 *daddr,
if (!path->query && path_rec_start(dev, path))
goto err_path;
- if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE)
+ if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
+ push_pseudo_header(skb, neigh->daddr);
__skb_queue_tail(&neigh->queue, skb);
- else
+ } else {
goto err_drop;
+ }
}
spin_unlock_irqrestore(&priv->lock, flags);
@@ -985,8 +992,7 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
}
if (path) {
if (skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- /* put pseudoheader back on for next time */
- skb_push(skb, IPOIB_PSEUDO_LEN);
+ push_pseudo_header(skb, phdr->hwaddr);
__skb_queue_tail(&path->queue, skb);
} else {
++dev->stats.tx_dropped;
@@ -1018,8 +1024,7 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
return;
} else if ((path->query || !path_rec_start(dev, path)) &&
skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- /* put pseudoheader back on for next time */
- skb_push(skb, IPOIB_PSEUDO_LEN);
+ push_pseudo_header(skb, phdr->hwaddr);
__skb_queue_tail(&path->queue, skb);
} else {
++dev->stats.tx_dropped;
@@ -1100,8 +1105,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- /* put pseudoheader back on for next time */
- skb_push(skb, sizeof(*phdr));
+ push_pseudo_header(skb, phdr->hwaddr);
spin_lock_irqsave(&priv->lock, flags);
__skb_queue_tail(&neigh->queue, skb);
spin_unlock_irqrestore(&priv->lock, flags);
@@ -1133,7 +1137,6 @@ static int ipoib_hard_header(struct sk_buff *skb,
unsigned short type,
const void *daddr, const void *saddr, unsigned len)
{
- struct ipoib_pseudo_header *phdr;
struct ipoib_header *header;
header = (struct ipoib_header *) skb_push(skb, sizeof *header);
@@ -1146,8 +1149,7 @@ static int ipoib_hard_header(struct sk_buff *skb,
* destination address into skb hard header so we can figure out where
* to send the packet later.
*/
- phdr = (struct ipoib_pseudo_header *) skb_push(skb, sizeof(*phdr));
- memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
+ push_pseudo_header(skb, daddr);
return IPOIB_HARD_LEN;
}
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index e7dcf14a76e2..1eee8f7e75ca 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -366,7 +366,6 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
struct srp_fr_desc *d;
struct ib_mr *mr;
int i, ret = -EINVAL;
- enum ib_mr_type mr_type;
if (pool_size <= 0)
goto err;
@@ -380,13 +379,9 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
spin_lock_init(&pool->lock);
INIT_LIST_HEAD(&pool->free_list);
- if (device->attrs.device_cap_flags & IB_DEVICE_SG_GAPS_REG)
- mr_type = IB_MR_TYPE_SG_GAPS;
- else
- mr_type = IB_MR_TYPE_MEM_REG;
-
for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
- mr = ib_alloc_mr(pd, mr_type, max_page_list_len);
+ mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG,
+ max_page_list_len);
if (IS_ERR(mr)) {
ret = PTR_ERR(mr);
goto destroy_pool;
@@ -1877,17 +1872,24 @@ static void srp_process_rsp(struct srp_rdma_ch *ch, struct srp_rsp *rsp)
if (unlikely(rsp->tag & SRP_TAG_TSK_MGMT)) {
spin_lock_irqsave(&ch->lock, flags);
ch->req_lim += be32_to_cpu(rsp->req_lim_delta);
+ if (rsp->tag == ch->tsk_mgmt_tag) {
+ ch->tsk_mgmt_status = -1;
+ if (be32_to_cpu(rsp->resp_data_len) >= 4)
+ ch->tsk_mgmt_status = rsp->data[3];
+ complete(&ch->tsk_mgmt_done);
+ } else {
+ shost_printk(KERN_ERR, target->scsi_host,
+ "Received tsk mgmt response too late for tag %#llx\n",
+ rsp->tag);
+ }
spin_unlock_irqrestore(&ch->lock, flags);
-
- ch->tsk_mgmt_status = -1;
- if (be32_to_cpu(rsp->resp_data_len) >= 4)
- ch->tsk_mgmt_status = rsp->data[3];
- complete(&ch->tsk_mgmt_done);
} else {
scmnd = scsi_host_find_tag(target->scsi_host, rsp->tag);
- if (scmnd) {
+ if (scmnd && scmnd->host_scribble) {
req = (void *)scmnd->host_scribble;
scmnd = srp_claim_req(ch, req, NULL, scmnd);
+ } else {
+ scmnd = NULL;
}
if (!scmnd) {
shost_printk(KERN_ERR, target->scsi_host,
@@ -2519,19 +2521,18 @@ srp_change_queue_depth(struct scsi_device *sdev, int qdepth)
}
static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun,
- u8 func)
+ u8 func, u8 *status)
{
struct srp_target_port *target = ch->target;
struct srp_rport *rport = target->rport;
struct ib_device *dev = target->srp_host->srp_dev->dev;
struct srp_iu *iu;
struct srp_tsk_mgmt *tsk_mgmt;
+ int res;
if (!ch->connected || target->qp_in_error)
return -1;
- init_completion(&ch->tsk_mgmt_done);
-
/*
* Lock the rport mutex to avoid that srp_create_ch_ib() is
* invoked while a task management function is being sent.
@@ -2554,10 +2555,16 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun,
tsk_mgmt->opcode = SRP_TSK_MGMT;
int_to_scsilun(lun, &tsk_mgmt->lun);
- tsk_mgmt->tag = req_tag | SRP_TAG_TSK_MGMT;
tsk_mgmt->tsk_mgmt_func = func;
tsk_mgmt->task_tag = req_tag;
+ spin_lock_irq(&ch->lock);
+ ch->tsk_mgmt_tag = (ch->tsk_mgmt_tag + 1) | SRP_TAG_TSK_MGMT;
+ tsk_mgmt->tag = ch->tsk_mgmt_tag;
+ spin_unlock_irq(&ch->lock);
+
+ init_completion(&ch->tsk_mgmt_done);
+
ib_dma_sync_single_for_device(dev, iu->dma, sizeof *tsk_mgmt,
DMA_TO_DEVICE);
if (srp_post_send(ch, iu, sizeof(*tsk_mgmt))) {
@@ -2566,13 +2573,15 @@ static int srp_send_tsk_mgmt(struct srp_rdma_ch *ch, u64 req_tag, u64 lun,
return -1;
}
+ res = wait_for_completion_timeout(&ch->tsk_mgmt_done,
+ msecs_to_jiffies(SRP_ABORT_TIMEOUT_MS));
+ if (res > 0 && status)
+ *status = ch->tsk_mgmt_status;
mutex_unlock(&rport->mutex);
- if (!wait_for_completion_timeout(&ch->tsk_mgmt_done,
- msecs_to_jiffies(SRP_ABORT_TIMEOUT_MS)))
- return -1;
+ WARN_ON_ONCE(res < 0);
- return 0;
+ return res > 0 ? 0 : -1;
}
static int srp_abort(struct scsi_cmnd *scmnd)
@@ -2598,7 +2607,7 @@ static int srp_abort(struct scsi_cmnd *scmnd)
shost_printk(KERN_ERR, target->scsi_host,
"Sending SRP abort for tag %#x\n", tag);
if (srp_send_tsk_mgmt(ch, tag, scmnd->device->lun,
- SRP_TSK_ABORT_TASK) == 0)
+ SRP_TSK_ABORT_TASK, NULL) == 0)
ret = SUCCESS;
else if (target->rport->state == SRP_RPORT_LOST)
ret = FAST_IO_FAIL;
@@ -2616,14 +2625,15 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
struct srp_target_port *target = host_to_target(scmnd->device->host);
struct srp_rdma_ch *ch;
int i;
+ u8 status;
shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n");
ch = &target->ch[0];
if (srp_send_tsk_mgmt(ch, SRP_TAG_NO_REQ, scmnd->device->lun,
- SRP_TSK_LUN_RESET))
+ SRP_TSK_LUN_RESET, &status))
return FAILED;
- if (ch->tsk_mgmt_status)
+ if (status)
return FAILED;
for (i = 0; i < target->ch_count; i++) {
@@ -2652,9 +2662,8 @@ static int srp_slave_alloc(struct scsi_device *sdev)
struct Scsi_Host *shost = sdev->host;
struct srp_target_port *target = host_to_target(shost);
struct srp_device *srp_dev = target->srp_host->srp_dev;
- struct ib_device *ibdev = srp_dev->dev;
- if (!(ibdev->attrs.device_cap_flags & IB_DEVICE_SG_GAPS_REG))
+ if (true)
blk_queue_virt_boundary(sdev->request_queue,
~srp_dev->mr_page_mask);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 21c69695f9d4..32ed40db3ca2 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -163,6 +163,7 @@ struct srp_rdma_ch {
int max_ti_iu_len;
int comp_vector;
+ u64 tsk_mgmt_tag;
struct completion tsk_mgmt_done;
u8 tsk_mgmt_status;
bool connected;
diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
index b5ed3bd082b5..e9ebc4f31d16 100644
--- a/drivers/memory/atmel-ebi.c
+++ b/drivers/memory/atmel-ebi.c
@@ -93,7 +93,7 @@ static void at91sam9_ebi_get_config(struct at91_ebi_dev *ebid,
struct at91_ebi_dev_config *conf)
{
struct at91sam9_smc_generic_fields *fields = &ebid->ebi->sam9;
- unsigned int clk_rate = clk_get_rate(ebid->ebi->clk);
+ unsigned int clk_period = NSEC_PER_SEC / clk_get_rate(ebid->ebi->clk);
struct at91sam9_ebi_dev_config *config = &conf->sam9;
struct at91sam9_smc_timings *timings = &config->timings;
unsigned int val;
@@ -102,43 +102,43 @@ static void at91sam9_ebi_get_config(struct at91_ebi_dev *ebid,
config->mode = val & ~AT91_SMC_TDF;
val = (val & AT91_SMC_TDF) >> 16;
- timings->tdf_ns = clk_rate * val;
+ timings->tdf_ns = clk_period * val;
regmap_fields_read(fields->setup, conf->cs, &val);
timings->ncs_rd_setup_ns = (val >> 24) & 0x1f;
timings->ncs_rd_setup_ns += ((val >> 29) & 0x1) * 128;
- timings->ncs_rd_setup_ns *= clk_rate;
+ timings->ncs_rd_setup_ns *= clk_period;
timings->nrd_setup_ns = (val >> 16) & 0x1f;
timings->nrd_setup_ns += ((val >> 21) & 0x1) * 128;
- timings->nrd_setup_ns *= clk_rate;
+ timings->nrd_setup_ns *= clk_period;
timings->ncs_wr_setup_ns = (val >> 8) & 0x1f;
timings->ncs_wr_setup_ns += ((val >> 13) & 0x1) * 128;
- timings->ncs_wr_setup_ns *= clk_rate;
+ timings->ncs_wr_setup_ns *= clk_period;
timings->nwe_setup_ns = val & 0x1f;
timings->nwe_setup_ns += ((val >> 5) & 0x1) * 128;
- timings->nwe_setup_ns *= clk_rate;
+ timings->nwe_setup_ns *= clk_period;
regmap_fields_read(fields->pulse, conf->cs, &val);
timings->ncs_rd_pulse_ns = (val >> 24) & 0x3f;
timings->ncs_rd_pulse_ns += ((val >> 30) & 0x1) * 256;
- timings->ncs_rd_pulse_ns *= clk_rate;
+ timings->ncs_rd_pulse_ns *= clk_period;
timings->nrd_pulse_ns = (val >> 16) & 0x3f;
timings->nrd_pulse_ns += ((val >> 22) & 0x1) * 256;
- timings->nrd_pulse_ns *= clk_rate;
+ timings->nrd_pulse_ns *= clk_period;
timings->ncs_wr_pulse_ns = (val >> 8) & 0x3f;
timings->ncs_wr_pulse_ns += ((val >> 14) & 0x1) * 256;
- timings->ncs_wr_pulse_ns *= clk_rate;
+ timings->ncs_wr_pulse_ns *= clk_period;
timings->nwe_pulse_ns = val & 0x3f;
timings->nwe_pulse_ns += ((val >> 6) & 0x1) * 256;
- timings->nwe_pulse_ns *= clk_rate;
+ timings->nwe_pulse_ns *= clk_period;
regmap_fields_read(fields->cycle, conf->cs, &val);
timings->nrd_cycle_ns = (val >> 16) & 0x7f;
timings->nrd_cycle_ns += ((val >> 23) & 0x3) * 256;
- timings->nrd_cycle_ns *= clk_rate;
+ timings->nrd_cycle_ns *= clk_period;
timings->nwe_cycle_ns = val & 0x7f;
timings->nwe_cycle_ns += ((val >> 7) & 0x3) * 256;
- timings->nwe_cycle_ns *= clk_rate;
+ timings->nwe_cycle_ns *= clk_period;
}
static int at91_xlate_timing(struct device_node *np, const char *prop,
@@ -334,6 +334,7 @@ static int at91sam9_ebi_apply_config(struct at91_ebi_dev *ebid,
struct at91_ebi_dev_config *conf)
{
unsigned int clk_rate = clk_get_rate(ebid->ebi->clk);
+ unsigned int clk_period = NSEC_PER_SEC / clk_rate;
struct at91sam9_ebi_dev_config *config = &conf->sam9;
struct at91sam9_smc_timings *timings = &config->timings;
struct at91sam9_smc_generic_fields *fields = &ebid->ebi->sam9;
@@ -376,7 +377,7 @@ static int at91sam9_ebi_apply_config(struct at91_ebi_dev *ebid,
val |= AT91SAM9_SMC_NWECYCLE(coded_val);
regmap_fields_write(fields->cycle, conf->cs, val);
- val = DIV_ROUND_UP(timings->tdf_ns, clk_rate);
+ val = DIV_ROUND_UP(timings->tdf_ns, clk_period);
if (val > AT91_SMC_TDF_MAX)
val = AT91_SMC_TDF_MAX;
regmap_fields_write(fields->mode, conf->cs,
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index a144073593fa..52ee3da85366 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -419,6 +419,9 @@ struct cxl_afu {
struct mutex contexts_lock;
spinlock_t afu_cntl_lock;
+ /* -1: AFU deconfigured/locked, >= 0: number of readers */
+ atomic_t configured_state;
+
/* AFU error buffer fields and bin attribute for sysfs */
u64 eb_len, eb_offset;
struct bin_attribute attr_eb;
diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c
index 62e0dfb5f15b..cc1706a92ace 100644
--- a/drivers/misc/cxl/main.c
+++ b/drivers/misc/cxl/main.c
@@ -268,7 +268,7 @@ struct cxl_afu *cxl_alloc_afu(struct cxl *adapter, int slice)
idr_init(&afu->contexts_idr);
mutex_init(&afu->contexts_lock);
spin_lock_init(&afu->afu_cntl_lock);
-
+ atomic_set(&afu->configured_state, -1);
afu->prefault_mode = CXL_PREFAULT_NONE;
afu->irqs_max = afu->adapter->user_irqs;
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index e96be9ca4e60..dd99b06e121a 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -1129,6 +1129,7 @@ static int pci_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc
if ((rc = cxl_native_register_psl_irq(afu)))
goto err2;
+ atomic_set(&afu->configured_state, 0);
return 0;
err2:
@@ -1141,6 +1142,14 @@ static int pci_configure_afu(struct cxl_afu *afu, struct cxl *adapter, struct pc
static void pci_deconfigure_afu(struct cxl_afu *afu)
{
+ /*
+ * It's okay to deconfigure when AFU is already locked, otherwise wait
+ * until there are no readers
+ */
+ if (atomic_read(&afu->configured_state) != -1) {
+ while (atomic_cmpxchg(&afu->configured_state, 0, -1) != -1)
+ schedule();
+ }
cxl_native_release_psl_irq(afu);
if (afu->adapter->native->sl_ops->release_serr_irq)
afu->adapter->native->sl_ops->release_serr_irq(afu);
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
index 3519acebfdab..512a4897dbf6 100644
--- a/drivers/misc/cxl/vphb.c
+++ b/drivers/misc/cxl/vphb.c
@@ -76,23 +76,32 @@ static int cxl_pcie_cfg_record(u8 bus, u8 devfn)
return (bus << 8) + devfn;
}
-static int cxl_pcie_config_info(struct pci_bus *bus, unsigned int devfn,
- struct cxl_afu **_afu, int *_record)
+static inline struct cxl_afu *pci_bus_to_afu(struct pci_bus *bus)
{
- struct pci_controller *phb;
- struct cxl_afu *afu;
- int record;
+ struct pci_controller *phb = bus ? pci_bus_to_host(bus) : NULL;
- phb = pci_bus_to_host(bus);
- if (phb == NULL)
- return PCIBIOS_DEVICE_NOT_FOUND;
+ return phb ? phb->private_data : NULL;
+}
+
+static void cxl_afu_configured_put(struct cxl_afu *afu)
+{
+ atomic_dec_if_positive(&afu->configured_state);
+}
+
+static bool cxl_afu_configured_get(struct cxl_afu *afu)
+{
+ return atomic_inc_unless_negative(&afu->configured_state);
+}
+
+static inline int cxl_pcie_config_info(struct pci_bus *bus, unsigned int devfn,
+ struct cxl_afu *afu, int *_record)
+{
+ int record;
- afu = (struct cxl_afu *)phb->private_data;
record = cxl_pcie_cfg_record(bus->number, devfn);
if (record > afu->crs_num)
return PCIBIOS_DEVICE_NOT_FOUND;
- *_afu = afu;
*_record = record;
return 0;
}
@@ -106,9 +115,14 @@ static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
u16 val16;
u32 val32;
- rc = cxl_pcie_config_info(bus, devfn, &afu, &record);
+ afu = pci_bus_to_afu(bus);
+ /* Grab a reader lock on afu. */
+ if (afu == NULL || !cxl_afu_configured_get(afu))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ rc = cxl_pcie_config_info(bus, devfn, afu, &record);
if (rc)
- return rc;
+ goto out;
switch (len) {
case 1:
@@ -127,10 +141,9 @@ static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
WARN_ON(1);
}
- if (rc)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- return PCIBIOS_SUCCESSFUL;
+out:
+ cxl_afu_configured_put(afu);
+ return rc ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
}
static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
@@ -139,9 +152,14 @@ static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
int rc, record;
struct cxl_afu *afu;
- rc = cxl_pcie_config_info(bus, devfn, &afu, &record);
+ afu = pci_bus_to_afu(bus);
+ /* Grab a reader lock on afu. */
+ if (afu == NULL || !cxl_afu_configured_get(afu))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ rc = cxl_pcie_config_info(bus, devfn, afu, &record);
if (rc)
- return rc;
+ goto out;
switch (len) {
case 1:
@@ -157,10 +175,9 @@ static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
WARN_ON(1);
}
- if (rc)
- return PCIBIOS_SET_FAILED;
-
- return PCIBIOS_SUCCESSFUL;
+out:
+ cxl_afu_configured_put(afu);
+ return rc ? PCIBIOS_SET_FAILED : PCIBIOS_SUCCESSFUL;
}
static struct pci_ops cxl_pcie_pci_ops =
diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 930c8165f2a8..0a4e81a253fb 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -991,7 +991,7 @@ static void mvpp2_txq_inc_put(struct mvpp2_txq_pcpu *txq_pcpu,
txq_pcpu->buffs + txq_pcpu->txq_put_index;
tx_buf->skb = skb;
tx_buf->size = tx_desc->data_size;
- tx_buf->phys = tx_desc->buf_phys_addr;
+ tx_buf->phys = tx_desc->buf_phys_addr + tx_desc->packet_offset;
txq_pcpu->txq_put_index++;
if (txq_pcpu->txq_put_index == txq_pcpu->size)
txq_pcpu->txq_put_index = 0;
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index b892dac70f4b..2458e6e05276 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -1660,7 +1660,7 @@ static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
pfirst->len, pfirst->next,
pfirst->prev);
skb_unlink(pfirst, &bus->glom);
- if (brcmf_sdio_fromevntchan(pfirst->data))
+ if (brcmf_sdio_fromevntchan(&dptr[SDPCM_HWHDR_LEN]))
brcmf_rx_event(bus->sdiodev->dev, pfirst);
else
brcmf_rx_frame(bus->sdiodev->dev, pfirst,
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index aefca644219b..a38ae34b74e4 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -1700,6 +1700,7 @@ static int select_pmem_id(struct nd_region *nd_region, u8 *pmem_id)
struct device *create_namespace_pmem(struct nd_region *nd_region,
struct nd_namespace_label *nd_label)
{
+ u64 altcookie = nd_region_interleave_set_altcookie(nd_region);
u64 cookie = nd_region_interleave_set_cookie(nd_region);
struct nd_label_ent *label_ent;
struct nd_namespace_pmem *nspm;
@@ -1718,7 +1719,11 @@ struct device *create_namespace_pmem(struct nd_region *nd_region,
if (__le64_to_cpu(nd_label->isetcookie) != cookie) {
dev_dbg(&nd_region->dev, "invalid cookie in label: %pUb\n",
nd_label->uuid);
- return ERR_PTR(-EAGAIN);
+ if (__le64_to_cpu(nd_label->isetcookie) != altcookie)
+ return ERR_PTR(-EAGAIN);
+
+ dev_dbg(&nd_region->dev, "valid altcookie in label: %pUb\n",
+ nd_label->uuid);
}
nspm = kzalloc(sizeof(*nspm), GFP_KERNEL);
@@ -1733,9 +1738,14 @@ struct device *create_namespace_pmem(struct nd_region *nd_region,
res->name = dev_name(&nd_region->dev);
res->flags = IORESOURCE_MEM;
- for (i = 0; i < nd_region->ndr_mappings; i++)
- if (!has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i))
- break;
+ for (i = 0; i < nd_region->ndr_mappings; i++) {
+ if (has_uuid_at_pos(nd_region, nd_label->uuid, cookie, i))
+ continue;
+ if (has_uuid_at_pos(nd_region, nd_label->uuid, altcookie, i))
+ continue;
+ break;
+ }
+
if (i < nd_region->ndr_mappings) {
struct nvdimm_drvdata *ndd = to_ndd(&nd_region->mapping[i]);
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index d3b2fca8deec..d869236b474f 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -327,6 +327,7 @@ struct nd_region *to_nd_region(struct device *dev);
int nd_region_to_nstype(struct nd_region *nd_region);
int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
u64 nd_region_interleave_set_cookie(struct nd_region *nd_region);
+u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region);
void nvdimm_bus_lock(struct device *dev);
void nvdimm_bus_unlock(struct device *dev);
bool is_nvdimm_bus_locked(struct device *dev);
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 6af5e629140c..9cf6f1a88fce 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -505,6 +505,15 @@ u64 nd_region_interleave_set_cookie(struct nd_region *nd_region)
return 0;
}
+u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
+{
+ struct nd_interleave_set *nd_set = nd_region->nd_set;
+
+ if (nd_set)
+ return nd_set->altcookie;
+ return 0;
+}
+
void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
{
struct nd_label_ent *label_ent, *e;
diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c
index acb2be0c8c2c..e96973b95e7a 100644
--- a/drivers/pci/hotplug/pnv_php.c
+++ b/drivers/pci/hotplug/pnv_php.c
@@ -82,7 +82,7 @@ static void pnv_php_free_slot(struct kref *kref)
static inline void pnv_php_put_slot(struct pnv_php_slot *php_slot)
{
- if (WARN_ON(!php_slot))
+ if (!php_slot)
return;
kref_put(&php_slot->kref, pnv_php_free_slot);
@@ -436,9 +436,21 @@ static int pnv_php_enable(struct pnv_php_slot *php_slot, bool rescan)
if (ret)
return ret;
- /* Proceed if there have nothing behind the slot */
- if (presence == OPAL_PCI_SLOT_EMPTY)
+ /*
+ * Proceed if there have nothing behind the slot. However,
+ * we should leave the slot in registered state at the
+ * beginning. Otherwise, the PCI devices inserted afterwards
+ * won't be probed and populated.
+ */
+ if (presence == OPAL_PCI_SLOT_EMPTY) {
+ if (!php_slot->power_state_check) {
+ php_slot->power_state_check = true;
+
+ return 0;
+ }
+
goto scan;
+ }
/*
* If the power supply to the slot is off, we can't detect
@@ -713,8 +725,12 @@ static irqreturn_t pnv_php_interrupt(int irq, void *data)
added = !!(lsts & PCI_EXP_LNKSTA_DLLLA);
} else if (sts & PCI_EXP_SLTSTA_PDC) {
ret = pnv_pci_get_presence_state(php_slot->id, &presence);
- if (!ret)
+ if (ret) {
+ dev_warn(&pdev->dev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n",
+ php_slot->name, ret, sts);
return IRQ_HANDLED;
+ }
+
added = !!(presence == OPAL_PCI_SLOT_PRESENT);
} else {
return IRQ_NONE;
@@ -799,6 +815,14 @@ static void pnv_php_enable_irq(struct pnv_php_slot *php_slot)
struct pci_dev *pdev = php_slot->pdev;
int irq, ret;
+ /*
+ * The MSI/MSIx interrupt might have been occupied by other
+ * drivers. Don't populate the surprise hotplug capability
+ * in that case.
+ */
+ if (pci_dev_msi_enabled(pdev))
+ return;
+
ret = pci_enable_device(pdev);
if (ret) {
dev_warn(&pdev->dev, "Error %d enabling device\n", ret);
diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c
index 117fccf7934a..01a6a83f625d 100644
--- a/drivers/pwm/pwm-pca9685.c
+++ b/drivers/pwm/pwm-pca9685.c
@@ -65,7 +65,6 @@
#define PCA9685_MAXCHAN 0x10
#define LED_FULL (1 << 4)
-#define MODE1_RESTART (1 << 7)
#define MODE1_SLEEP (1 << 4)
#define MODE2_INVRT (1 << 4)
#define MODE2_OUTDRV (1 << 2)
@@ -117,16 +116,6 @@ static int pca9685_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
udelay(500);
pca->period_ns = period_ns;
-
- /*
- * If the duty cycle did not change, restart PWM with
- * the same duty cycle to period ratio and return.
- */
- if (duty_ns == pca->duty_ns) {
- regmap_update_bits(pca->regmap, PCA9685_MODE1,
- MODE1_RESTART, 0x1);
- return 0;
- }
} else {
dev_err(chip->dev,
"prescaler not set: period out of bounds!\n");
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 9d66b4fb174b..415d10a67b7a 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -892,7 +892,7 @@ dcssblk_direct_access (struct block_device *bdev, sector_t secnum,
dev_info = bdev->bd_disk->private_data;
if (!dev_info)
return -ENODEV;
- dev_sz = dev_info->end - dev_info->start;
+ dev_sz = dev_info->end - dev_info->start + 1;
offset = secnum * 512;
*kaddr = (void *) dev_info->start + offset;
*pfn = __pfn_to_pfn_t(PFN_DOWN(dev_info->start + offset), PFN_DEV);
diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c
index 8225da619014..4182f60124da 100644
--- a/drivers/s390/cio/ioasm.c
+++ b/drivers/s390/cio/ioasm.c
@@ -165,13 +165,15 @@ int tpi(struct tpi_info *addr)
int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;
- int cc;
+ int cc = -EIO;
asm volatile(
" .insn rre,0xb25f0000,%2,0\n"
- " ipm %0\n"
+ "0: ipm %0\n"
" srl %0,28\n"
- : "=d" (cc), "=m" (*(addr_type *) chsc_area)
+ "1:\n"
+ EX_TABLE(0b, 1b)
+ : "+d" (cc), "=m" (*(addr_type *) chsc_area)
: "d" (chsc_area), "m" (*(addr_type *) chsc_area)
: "cc");
trace_s390_cio_chsc(chsc_area, cc);
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 5d06253c2a7a..30e9fbbff051 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -147,11 +147,11 @@ static inline void tiqdio_call_inq_handlers(struct qdio_irq *irq)
struct qdio_q *q;
int i;
- for_each_input_queue(irq, q, i) {
- if (!references_shared_dsci(irq) &&
- has_multiple_inq_on_dsci(irq))
- xchg(q->irq_ptr->dsci, 0);
+ if (!references_shared_dsci(irq) &&
+ has_multiple_inq_on_dsci(irq))
+ xchg(irq->dsci, 0);
+ for_each_input_queue(irq, q, i) {
if (q->u.in.queue_start_poll) {
/* skip if polling is enabled or already in work */
if (test_and_set_bit(QDIO_QUEUE_IRQS_DISABLED,
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index ea9617c7b403..cc38a3509f78 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -77,12 +77,16 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
&deve->read_bytes);
se_lun = rcu_dereference(deve->se_lun);
+
+ if (!percpu_ref_tryget_live(&se_lun->lun_ref)) {
+ se_lun = NULL;
+ goto out_unlock;
+ }
+
se_cmd->se_lun = rcu_dereference(deve->se_lun);
se_cmd->pr_res_key = deve->pr_res_key;
se_cmd->orig_fe_lun = unpacked_lun;
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
-
- percpu_ref_get(&se_lun->lun_ref);
se_cmd->lun_ref_active = true;
if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
@@ -96,6 +100,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
goto ref_dev;
}
}
+out_unlock:
rcu_read_unlock();
if (!se_lun) {
@@ -815,6 +820,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
xcopy_lun = &dev->xcopy_lun;
rcu_assign_pointer(xcopy_lun->lun_se_dev, dev);
init_completion(&xcopy_lun->lun_ref_comp);
+ init_completion(&xcopy_lun->lun_shutdown_comp);
INIT_LIST_HEAD(&xcopy_lun->lun_deve_list);
INIT_LIST_HEAD(&xcopy_lun->lun_dev_link);
mutex_init(&xcopy_lun->lun_tg_pt_md_mutex);
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index d99752c6cd60..2744251178ad 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -445,7 +445,7 @@ static void core_tpg_lun_ref_release(struct percpu_ref *ref)
{
struct se_lun *lun = container_of(ref, struct se_lun, lun_ref);
- complete(&lun->lun_ref_comp);
+ complete(&lun->lun_shutdown_comp);
}
int core_tpg_register(
@@ -571,6 +571,7 @@ struct se_lun *core_tpg_alloc_lun(
lun->lun_link_magic = SE_LUN_LINK_MAGIC;
atomic_set(&lun->lun_acl_count, 0);
init_completion(&lun->lun_ref_comp);
+ init_completion(&lun->lun_shutdown_comp);
INIT_LIST_HEAD(&lun->lun_deve_list);
INIT_LIST_HEAD(&lun->lun_dev_link);
atomic_set(&lun->lun_tg_pt_secondary_offline, 0);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 767d1eb6e035..cae4dea6464e 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2702,10 +2702,39 @@ void target_wait_for_sess_cmds(struct se_session *se_sess)
}
EXPORT_SYMBOL(target_wait_for_sess_cmds);
+static void target_lun_confirm(struct percpu_ref *ref)
+{
+ struct se_lun *lun = container_of(ref, struct se_lun, lun_ref);
+
+ complete(&lun->lun_ref_comp);
+}
+
void transport_clear_lun_ref(struct se_lun *lun)
{
- percpu_ref_kill(&lun->lun_ref);
+ /*
+ * Mark the percpu-ref as DEAD, switch to atomic_t mode, drop
+ * the initial reference and schedule confirm kill to be
+ * executed after one full RCU grace period has completed.
+ */
+ percpu_ref_kill_and_confirm(&lun->lun_ref, target_lun_confirm);
+ /*
+ * The first completion waits for percpu_ref_switch_to_atomic_rcu()
+ * to call target_lun_confirm after lun->lun_ref has been marked
+ * as __PERCPU_REF_DEAD on all CPUs, and switches to atomic_t
+ * mode so that percpu_ref_tryget_live() lookup of lun->lun_ref
+ * fails for all new incoming I/O.
+ */
wait_for_completion(&lun->lun_ref_comp);
+ /*
+ * The second completion waits for percpu_ref_put_many() to
+ * invoke ->release() after lun->lun_ref has switched to
+ * atomic_t mode, and lun->lun_ref.count has reached zero.
+ *
+ * At this point all target-core lun->lun_ref references have
+ * been dropped via transport_lun_remove_cmd(), and it's safe
+ * to proceed with the remaining LUN shutdown.
+ */
+ wait_for_completion(&lun->lun_shutdown_comp);
}
static bool
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index a7fa016f31eb..6d1e2f746ab4 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -114,7 +114,7 @@
#define DEFAULT_TX_BUF_COUNT 3
struct n_hdlc_buf {
- struct n_hdlc_buf *link;
+ struct list_head list_item;
int count;
char buf[1];
};
@@ -122,8 +122,7 @@ struct n_hdlc_buf {
#define N_HDLC_BUF_SIZE (sizeof(struct n_hdlc_buf) + maxframe)
struct n_hdlc_buf_list {
- struct n_hdlc_buf *head;
- struct n_hdlc_buf *tail;
+ struct list_head list;
int count;
spinlock_t spinlock;
};
@@ -136,7 +135,6 @@ struct n_hdlc_buf_list {
* @backup_tty - TTY to use if tty gets closed
* @tbusy - reentrancy flag for tx wakeup code
* @woke_up - FIXME: describe this field
- * @tbuf - currently transmitting tx buffer
* @tx_buf_list - list of pending transmit frame buffers
* @rx_buf_list - list of received frame buffers
* @tx_free_buf_list - list unused transmit frame buffers
@@ -149,7 +147,6 @@ struct n_hdlc {
struct tty_struct *backup_tty;
int tbusy;
int woke_up;
- struct n_hdlc_buf *tbuf;
struct n_hdlc_buf_list tx_buf_list;
struct n_hdlc_buf_list rx_buf_list;
struct n_hdlc_buf_list tx_free_buf_list;
@@ -159,6 +156,8 @@ struct n_hdlc {
/*
* HDLC buffer list manipulation functions
*/
+static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
+ struct n_hdlc_buf *buf);
static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
struct n_hdlc_buf *buf);
static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *list);
@@ -208,16 +207,9 @@ static void flush_tx_queue(struct tty_struct *tty)
{
struct n_hdlc *n_hdlc = tty2n_hdlc(tty);
struct n_hdlc_buf *buf;
- unsigned long flags;
while ((buf = n_hdlc_buf_get(&n_hdlc->tx_buf_list)))
n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, buf);
- spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
- if (n_hdlc->tbuf) {
- n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, n_hdlc->tbuf);
- n_hdlc->tbuf = NULL;
- }
- spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
}
static struct tty_ldisc_ops n_hdlc_ldisc = {
@@ -283,7 +275,6 @@ static void n_hdlc_release(struct n_hdlc *n_hdlc)
} else
break;
}
- kfree(n_hdlc->tbuf);
kfree(n_hdlc);
} /* end of n_hdlc_release() */
@@ -402,13 +393,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
n_hdlc->woke_up = 0;
spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
- /* get current transmit buffer or get new transmit */
- /* buffer from list of pending transmit buffers */
-
- tbuf = n_hdlc->tbuf;
- if (!tbuf)
- tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
-
+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
while (tbuf) {
if (debuglevel >= DEBUG_LEVEL_INFO)
printk("%s(%d)sending frame %p, count=%d\n",
@@ -420,7 +405,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
/* rollback was possible and has been done */
if (actual == -ERESTARTSYS) {
- n_hdlc->tbuf = tbuf;
+ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
break;
}
/* if transmit error, throw frame away by */
@@ -435,10 +420,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
/* free current transmit buffer */
n_hdlc_buf_put(&n_hdlc->tx_free_buf_list, tbuf);
-
- /* this tx buffer is done */
- n_hdlc->tbuf = NULL;
-
+
/* wait up sleeping writers */
wake_up_interruptible(&tty->write_wait);
@@ -448,10 +430,12 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
if (debuglevel >= DEBUG_LEVEL_INFO)
printk("%s(%d)frame %p pending\n",
__FILE__,__LINE__,tbuf);
-
- /* buffer not accepted by driver */
- /* set this buffer as pending buffer */
- n_hdlc->tbuf = tbuf;
+
+ /*
+ * the buffer was not accepted by driver,
+ * return it back into tx queue
+ */
+ n_hdlc_buf_return(&n_hdlc->tx_buf_list, tbuf);
break;
}
}
@@ -749,7 +733,8 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
int error = 0;
int count;
unsigned long flags;
-
+ struct n_hdlc_buf *buf = NULL;
+
if (debuglevel >= DEBUG_LEVEL_INFO)
printk("%s(%d)n_hdlc_tty_ioctl() called %d\n",
__FILE__,__LINE__,cmd);
@@ -763,8 +748,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
/* report count of read data available */
/* in next available frame (if any) */
spin_lock_irqsave(&n_hdlc->rx_buf_list.spinlock,flags);
- if (n_hdlc->rx_buf_list.head)
- count = n_hdlc->rx_buf_list.head->count;
+ buf = list_first_entry_or_null(&n_hdlc->rx_buf_list.list,
+ struct n_hdlc_buf, list_item);
+ if (buf)
+ count = buf->count;
else
count = 0;
spin_unlock_irqrestore(&n_hdlc->rx_buf_list.spinlock,flags);
@@ -776,8 +763,10 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
count = tty_chars_in_buffer(tty);
/* add size of next output frame in queue */
spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock,flags);
- if (n_hdlc->tx_buf_list.head)
- count += n_hdlc->tx_buf_list.head->count;
+ buf = list_first_entry_or_null(&n_hdlc->tx_buf_list.list,
+ struct n_hdlc_buf, list_item);
+ if (buf)
+ count += buf->count;
spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock,flags);
error = put_user(count, (int __user *)arg);
break;
@@ -825,14 +814,14 @@ static unsigned int n_hdlc_tty_poll(struct tty_struct *tty, struct file *filp,
poll_wait(filp, &tty->write_wait, wait);
/* set bits for operations that won't block */
- if (n_hdlc->rx_buf_list.head)
+ if (!list_empty(&n_hdlc->rx_buf_list.list))
mask |= POLLIN | POLLRDNORM; /* readable */
if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
mask |= POLLHUP;
if (tty_hung_up_p(filp))
mask |= POLLHUP;
if (!tty_is_writelocked(tty) &&
- n_hdlc->tx_free_buf_list.head)
+ !list_empty(&n_hdlc->tx_free_buf_list.list))
mask |= POLLOUT | POLLWRNORM; /* writable */
}
return mask;
@@ -856,7 +845,12 @@ static struct n_hdlc *n_hdlc_alloc(void)
spin_lock_init(&n_hdlc->tx_free_buf_list.spinlock);
spin_lock_init(&n_hdlc->rx_buf_list.spinlock);
spin_lock_init(&n_hdlc->tx_buf_list.spinlock);
-
+
+ INIT_LIST_HEAD(&n_hdlc->rx_free_buf_list.list);
+ INIT_LIST_HEAD(&n_hdlc->tx_free_buf_list.list);
+ INIT_LIST_HEAD(&n_hdlc->rx_buf_list.list);
+ INIT_LIST_HEAD(&n_hdlc->tx_buf_list.list);
+
/* allocate free rx buffer list */
for(i=0;i<DEFAULT_RX_BUF_COUNT;i++) {
buf = kmalloc(N_HDLC_BUF_SIZE, GFP_KERNEL);
@@ -884,53 +878,65 @@ static struct n_hdlc *n_hdlc_alloc(void)
} /* end of n_hdlc_alloc() */
/**
+ * n_hdlc_buf_return - put the HDLC buffer after the head of the specified list
+ * @buf_list - pointer to the buffer list
+ * @buf - pointer to the buffer
+ */
+static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list,
+ struct n_hdlc_buf *buf)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&buf_list->spinlock, flags);
+
+ list_add(&buf->list_item, &buf_list->list);
+ buf_list->count++;
+
+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
+}
+
+/**
* n_hdlc_buf_put - add specified HDLC buffer to tail of specified list
- * @list - pointer to buffer list
+ * @buf_list - pointer to buffer list
* @buf - pointer to buffer
*/
-static void n_hdlc_buf_put(struct n_hdlc_buf_list *list,
+static void n_hdlc_buf_put(struct n_hdlc_buf_list *buf_list,
struct n_hdlc_buf *buf)
{
unsigned long flags;
- spin_lock_irqsave(&list->spinlock,flags);
-
- buf->link=NULL;
- if (list->tail)
- list->tail->link = buf;
- else
- list->head = buf;
- list->tail = buf;
- (list->count)++;
-
- spin_unlock_irqrestore(&list->spinlock,flags);
-
+
+ spin_lock_irqsave(&buf_list->spinlock, flags);
+
+ list_add_tail(&buf->list_item, &buf_list->list);
+ buf_list->count++;
+
+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
} /* end of n_hdlc_buf_put() */
/**
* n_hdlc_buf_get - remove and return an HDLC buffer from list
- * @list - pointer to HDLC buffer list
+ * @buf_list - pointer to HDLC buffer list
*
* Remove and return an HDLC buffer from the head of the specified HDLC buffer
* list.
* Returns a pointer to HDLC buffer if available, otherwise %NULL.
*/
-static struct n_hdlc_buf* n_hdlc_buf_get(struct n_hdlc_buf_list *list)
+static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *buf_list)
{
unsigned long flags;
struct n_hdlc_buf *buf;
- spin_lock_irqsave(&list->spinlock,flags);
-
- buf = list->head;
+
+ spin_lock_irqsave(&buf_list->spinlock, flags);
+
+ buf = list_first_entry_or_null(&buf_list->list,
+ struct n_hdlc_buf, list_item);
if (buf) {
- list->head = buf->link;
- (list->count)--;
+ list_del(&buf->list_item);
+ buf_list->count--;
}
- if (!list->head)
- list->tail = NULL;
-
- spin_unlock_irqrestore(&list->spinlock,flags);
+
+ spin_unlock_irqrestore(&buf_list->spinlock, flags);
return buf;
-
} /* end of n_hdlc_buf_get() */
static char hdlc_banner[] __initdata =
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index b98c1578f45a..4d09bd495a88 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -2688,6 +2688,8 @@ enum pci_board_num_t {
pbn_b0_4_1152000_200,
pbn_b0_8_1152000_200,
+ pbn_b0_4_1250000,
+
pbn_b0_2_1843200,
pbn_b0_4_1843200,
@@ -2919,6 +2921,13 @@ static struct pciserial_board pci_boards[] = {
.uart_offset = 0x200,
},
+ [pbn_b0_4_1250000] = {
+ .flags = FL_BASE0,
+ .num_ports = 4,
+ .base_baud = 1250000,
+ .uart_offset = 8,
+ },
+
[pbn_b0_2_1843200] = {
.flags = FL_BASE0,
.num_ports = 2,
@@ -5549,6 +5558,10 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 },
{ PCI_DEVICE(0x1c29, 0x1112), .driver_data = pbn_fintek_12 },
+ /* MKS Tenta SCOM-080x serial cards */
+ { PCI_DEVICE(0x1601, 0x0800), .driver_data = pbn_b0_4_1250000 },
+ { PCI_DEVICE(0x1601, 0xa801), .driver_data = pbn_b0_4_1250000 },
+
/*
* These entries match devices with class COMMUNICATION_SERIAL,
* COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 81dd075356b9..d4fb0afc0097 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -202,7 +202,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
/* try and do the mount */
_debug("--- attempting mount %s -o %s ---", devname, options);
- mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options);
+ mnt = vfs_submount(mntpt, &afs_fs_type, devname, options);
_debug("--- mount result %p ---", mnt);
free_page((unsigned long) devname);
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index e44271dfceb6..5db6c8d745ea 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -431,8 +431,8 @@ int autofs4_wait(struct autofs_sb_info *sbi,
memcpy(&wq->name, &qstr, sizeof(struct qstr));
wq->dev = autofs4_get_dev(sbi);
wq->ino = autofs4_get_ino(sbi);
- wq->uid = current_real_cred()->uid;
- wq->gid = current_real_cred()->gid;
+ wq->uid = current_cred()->uid;
+ wq->gid = current_cred()->gid;
wq->pid = pid;
wq->tgid = tgid;
wq->status = -EINTR; /* Status return if interrupted */
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 6a26c7bd1286..e3e1a80b351e 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -628,6 +628,9 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
{
dout("__unregister_request %p tid %lld\n", req, req->r_tid);
+ /* Never leave an unregistered request on an unsafe list! */
+ list_del_init(&req->r_unsafe_item);
+
if (req->r_tid == mdsc->oldest_tid) {
struct rb_node *p = rb_next(&req->r_node);
mdsc->oldest_tid = 0;
@@ -1036,7 +1039,6 @@ static void cleanup_session_requests(struct ceph_mds_client *mdsc,
while (!list_empty(&session->s_unsafe)) {
req = list_first_entry(&session->s_unsafe,
struct ceph_mds_request, r_unsafe_item);
- list_del_init(&req->r_unsafe_item);
pr_warn_ratelimited(" dropping unsafe request %llu\n",
req->r_tid);
__unregister_request(mdsc, req);
@@ -2423,7 +2425,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
* useful we could do with a revised return value.
*/
dout("got safe reply %llu, mds%d\n", tid, mds);
- list_del_init(&req->r_unsafe_item);
/* last unsafe request during umount? */
if (mdsc->stopping && !__get_oldest_req(mdsc))
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index ec9dbbcca3b9..9156be545b0f 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -245,7 +245,8 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
* @fullpath: full path in UNC format
* @ref: server's referral
*/
-static struct vfsmount *cifs_dfs_do_refmount(struct cifs_sb_info *cifs_sb,
+static struct vfsmount *cifs_dfs_do_refmount(struct dentry *mntpt,
+ struct cifs_sb_info *cifs_sb,
const char *fullpath, const struct dfs_info3_param *ref)
{
struct vfsmount *mnt;
@@ -259,7 +260,7 @@ static struct vfsmount *cifs_dfs_do_refmount(struct cifs_sb_info *cifs_sb,
if (IS_ERR(mountdata))
return (struct vfsmount *)mountdata;
- mnt = vfs_kern_mount(&cifs_fs_type, 0, devname, mountdata);
+ mnt = vfs_submount(mntpt, &cifs_fs_type, devname, mountdata);
kfree(mountdata);
kfree(devname);
return mnt;
@@ -334,7 +335,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
mnt = ERR_PTR(-EINVAL);
break;
}
- mnt = cifs_dfs_do_refmount(cifs_sb,
+ mnt = cifs_dfs_do_refmount(mntpt, cifs_sb,
full_path, referrals + i);
cifs_dbg(FYI, "%s: cifs_dfs_do_refmount:%s , mnt:%p\n",
__func__, referrals[i].node_name, mnt);
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index f17fcf89e18e..1e30f74a9527 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -187,9 +187,9 @@ static const struct super_operations debugfs_super_operations = {
static struct vfsmount *debugfs_automount(struct path *path)
{
- struct vfsmount *(*f)(void *);
- f = (struct vfsmount *(*)(void *))path->dentry->d_fsdata;
- return f(d_inode(path->dentry)->i_private);
+ debugfs_automount_t f;
+ f = (debugfs_automount_t)path->dentry->d_fsdata;
+ return f(path->dentry, d_inode(path->dentry)->i_private);
}
static const struct dentry_operations debugfs_dops = {
@@ -504,7 +504,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_dir);
*/
struct dentry *debugfs_create_automount(const char *name,
struct dentry *parent,
- struct vfsmount *(*f)(void *),
+ debugfs_automount_t f,
void *data)
{
struct dentry *dentry = start_creating(name, parent);
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 338d2f73eb29..a2c05f2ada6d 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1359,6 +1359,16 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat,
return 0;
}
+static void fat_dummy_inode_init(struct inode *inode)
+{
+ /* Initialize this dummy inode to work as no-op. */
+ MSDOS_I(inode)->mmu_private = 0;
+ MSDOS_I(inode)->i_start = 0;
+ MSDOS_I(inode)->i_logstart = 0;
+ MSDOS_I(inode)->i_attrs = 0;
+ MSDOS_I(inode)->i_pos = 0;
+}
+
static int fat_read_root(struct inode *inode)
{
struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
@@ -1803,12 +1813,13 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat,
fat_inode = new_inode(sb);
if (!fat_inode)
goto out_fail;
- MSDOS_I(fat_inode)->i_pos = 0;
+ fat_dummy_inode_init(fat_inode);
sbi->fat_inode = fat_inode;
fsinfo_inode = new_inode(sb);
if (!fsinfo_inode)
goto out_fail;
+ fat_dummy_inode_init(fsinfo_inode);
fsinfo_inode->i_ino = MSDOS_FSINFO_INO;
sbi->fsinfo_inode = fsinfo_inode;
insert_inode_hash(fsinfo_inode);
diff --git a/fs/mount.h b/fs/mount.h
index d2e25d7b64b3..d8295f273a2f 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -89,7 +89,6 @@ static inline int is_mounted(struct vfsmount *mnt)
}
extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *);
-extern struct mount *__lookup_mnt_last(struct vfsmount *, struct dentry *);
extern int __legitimize_mnt(struct vfsmount *, unsigned);
extern bool legitimize_mnt(struct vfsmount *, unsigned);
diff --git a/fs/namei.c b/fs/namei.c
index 5b4eed221530..d5e5140c1045 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1100,7 +1100,6 @@ static int follow_automount(struct path *path, struct nameidata *nd,
bool *need_mntput)
{
struct vfsmount *mnt;
- const struct cred *old_cred;
int err;
if (!path->dentry->d_op || !path->dentry->d_op->d_automount)
@@ -1129,9 +1128,7 @@ static int follow_automount(struct path *path, struct nameidata *nd,
if (nd->total_link_count >= 40)
return -ELOOP;
- old_cred = override_creds(&init_cred);
mnt = path->dentry->d_op->d_automount(path);
- revert_creds(old_cred);
if (IS_ERR(mnt)) {
/*
* The filesystem is allowed to return -EISDIR here to indicate
diff --git a/fs/namespace.c b/fs/namespace.c
index 7cea503ae06d..5e35057f07ac 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -641,28 +641,6 @@ struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)
}
/*
- * find the last mount at @dentry on vfsmount @mnt.
- * mount_lock must be held.
- */
-struct mount *__lookup_mnt_last(struct vfsmount *mnt, struct dentry *dentry)
-{
- struct mount *p, *res = NULL;
- p = __lookup_mnt(mnt, dentry);
- if (!p)
- goto out;
- if (!(p->mnt.mnt_flags & MNT_UMOUNT))
- res = p;
- hlist_for_each_entry_continue(p, mnt_hash) {
- if (&p->mnt_parent->mnt != mnt || p->mnt_mountpoint != dentry)
- break;
- if (!(p->mnt.mnt_flags & MNT_UMOUNT))
- res = p;
- }
-out:
- return res;
-}
-
-/*
* lookup_mnt - Return the first child mount mounted at path
*
* "First" means first mounted chronologically. If you create the
@@ -882,6 +860,13 @@ void mnt_set_mountpoint(struct mount *mnt,
hlist_add_head(&child_mnt->mnt_mp_list, &mp->m_list);
}
+static void __attach_mnt(struct mount *mnt, struct mount *parent)
+{
+ hlist_add_head_rcu(&mnt->mnt_hash,
+ m_hash(&parent->mnt, mnt->mnt_mountpoint));
+ list_add_tail(&mnt->mnt_child, &parent->mnt_mounts);
+}
+
/*
* vfsmount lock must be held for write
*/
@@ -890,28 +875,45 @@ static void attach_mnt(struct mount *mnt,
struct mountpoint *mp)
{
mnt_set_mountpoint(parent, mp, mnt);
- hlist_add_head_rcu(&mnt->mnt_hash, m_hash(&parent->mnt, mp->m_dentry));
- list_add_tail(&mnt->mnt_child, &parent->mnt_mounts);
+ __attach_mnt(mnt, parent);
}
-static void attach_shadowed(struct mount *mnt,
- struct mount *parent,
- struct mount *shadows)
+void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, struct mount *mnt)
{
- if (shadows) {
- hlist_add_behind_rcu(&mnt->mnt_hash, &shadows->mnt_hash);
- list_add(&mnt->mnt_child, &shadows->mnt_child);
- } else {
- hlist_add_head_rcu(&mnt->mnt_hash,
- m_hash(&parent->mnt, mnt->mnt_mountpoint));
- list_add_tail(&mnt->mnt_child, &parent->mnt_mounts);
- }
+ struct mountpoint *old_mp = mnt->mnt_mp;
+ struct dentry *old_mountpoint = mnt->mnt_mountpoint;
+ struct mount *old_parent = mnt->mnt_parent;
+
+ list_del_init(&mnt->mnt_child);
+ hlist_del_init(&mnt->mnt_mp_list);
+ hlist_del_init_rcu(&mnt->mnt_hash);
+
+ attach_mnt(mnt, parent, mp);
+
+ put_mountpoint(old_mp);
+
+ /*
+ * Safely avoid even the suggestion this code might sleep or
+ * lock the mount hash by taking advantage of the knowledge that
+ * mnt_change_mountpoint will not release the final reference
+ * to a mountpoint.
+ *
+ * During mounting, the mount passed in as the parent mount will
+ * continue to use the old mountpoint and during unmounting, the
+ * old mountpoint will continue to exist until namespace_unlock,
+ * which happens well after mnt_change_mountpoint.
+ */
+ spin_lock(&old_mountpoint->d_lock);
+ old_mountpoint->d_lockref.count--;
+ spin_unlock(&old_mountpoint->d_lock);
+
+ mnt_add_count(old_parent, -1);
}
/*
* vfsmount lock must be held for write
*/
-static void commit_tree(struct mount *mnt, struct mount *shadows)
+static void commit_tree(struct mount *mnt)
{
struct mount *parent = mnt->mnt_parent;
struct mount *m;
@@ -929,7 +931,7 @@ static void commit_tree(struct mount *mnt, struct mount *shadows)
n->mounts += n->pending_mounts;
n->pending_mounts = 0;
- attach_shadowed(mnt, parent, shadows);
+ __attach_mnt(mnt, parent);
touch_mnt_namespace(n);
}
@@ -993,6 +995,21 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
}
EXPORT_SYMBOL_GPL(vfs_kern_mount);
+struct vfsmount *
+vfs_submount(const struct dentry *mountpoint, struct file_system_type *type,
+ const char *name, void *data)
+{
+ /* Until it is worked out how to pass the user namespace
+ * through from the parent mount to the submount don't support
+ * unprivileged mounts with submounts.
+ */
+ if (mountpoint->d_sb->s_user_ns != &init_user_ns)
+ return ERR_PTR(-EPERM);
+
+ return vfs_kern_mount(type, MS_SUBMOUNT, name, data);
+}
+EXPORT_SYMBOL_GPL(vfs_submount);
+
static struct mount *clone_mnt(struct mount *old, struct dentry *root,
int flag)
{
@@ -1737,7 +1754,6 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry,
continue;
for (s = r; s; s = next_mnt(s, r)) {
- struct mount *t = NULL;
if (!(flag & CL_COPY_UNBINDABLE) &&
IS_MNT_UNBINDABLE(s)) {
s = skip_mnt_tree(s);
@@ -1759,14 +1775,7 @@ struct mount *copy_tree(struct mount *mnt, struct dentry *dentry,
goto out;
lock_mount_hash();
list_add_tail(&q->mnt_list, &res->mnt_list);
- mnt_set_mountpoint(parent, p->mnt_mp, q);
- if (!list_empty(&parent->mnt_mounts)) {
- t = list_last_entry(&parent->mnt_mounts,
- struct mount, mnt_child);
- if (t->mnt_mp != p->mnt_mp)
- t = NULL;
- }
- attach_shadowed(q, parent, t);
+ attach_mnt(q, parent, p->mnt_mp);
unlock_mount_hash();
}
}
@@ -1967,10 +1976,18 @@ static int attach_recursive_mnt(struct mount *source_mnt,
{
HLIST_HEAD(tree_list);
struct mnt_namespace *ns = dest_mnt->mnt_ns;
+ struct mountpoint *smp;
struct mount *child, *p;
struct hlist_node *n;
int err;
+ /* Preallocate a mountpoint in case the new mounts need
+ * to be tucked under other mounts.
+ */
+ smp = get_mountpoint(source_mnt->mnt.mnt_root);
+ if (IS_ERR(smp))
+ return PTR_ERR(smp);
+
/* Is there space to add these mounts to the mount namespace? */
if (!parent_path) {
err = count_mounts(ns, source_mnt);
@@ -1997,16 +2014,19 @@ static int attach_recursive_mnt(struct mount *source_mnt,
touch_mnt_namespace(source_mnt->mnt_ns);
} else {
mnt_set_mountpoint(dest_mnt, dest_mp, source_mnt);
- commit_tree(source_mnt, NULL);
+ commit_tree(source_mnt);
}
hlist_for_each_entry_safe(child, n, &tree_list, mnt_hash) {
struct mount *q;
hlist_del_init(&child->mnt_hash);
- q = __lookup_mnt_last(&child->mnt_parent->mnt,
- child->mnt_mountpoint);
- commit_tree(child, q);
+ q = __lookup_mnt(&child->mnt_parent->mnt,
+ child->mnt_mountpoint);
+ if (q)
+ mnt_change_mountpoint(child, smp, q);
+ commit_tree(child);
}
+ put_mountpoint(smp);
unlock_mount_hash();
return 0;
@@ -2021,6 +2041,11 @@ static int attach_recursive_mnt(struct mount *source_mnt,
cleanup_group_ids(source_mnt, NULL);
out:
ns->pending_mounts = 0;
+
+ read_seqlock_excl(&mount_lock);
+ put_mountpoint(smp);
+ read_sequnlock_excl(&mount_lock);
+
return err;
}
@@ -2769,7 +2794,7 @@ long do_mount(const char *dev_name, const char __user *dir_name,
flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN |
MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
- MS_STRICTATIME | MS_NOREMOTELOCK);
+ MS_STRICTATIME | MS_NOREMOTELOCK | MS_SUBMOUNT);
if (flags & MS_REMOUNT)
retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 5551e8ef67fd..e49d831c4e85 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -226,7 +226,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
const char *devname,
struct nfs_clone_mount *mountdata)
{
- return vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
+ return vfs_submount(mountdata->dentry, &nfs_xdev_fs_type, devname, mountdata);
}
/**
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index d21104912676..d8b040bd9814 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -279,7 +279,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
mountdata->hostname,
mountdata->mnt_path);
- mnt = vfs_kern_mount(&nfs4_referral_fs_type, 0, page, mountdata);
+ mnt = vfs_submount(mountdata->dentry, &nfs4_referral_fs_type, page, mountdata);
if (!IS_ERR(mnt))
break;
}
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index c48859f16e7b..67c24351a67f 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -115,6 +115,13 @@ static struct inode *orangefs_alloc_inode(struct super_block *sb)
return &orangefs_inode->vfs_inode;
}
+static void orangefs_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+ kmem_cache_free(orangefs_inode_cache, orangefs_inode);
+}
+
static void orangefs_destroy_inode(struct inode *inode)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
@@ -123,7 +130,7 @@ static void orangefs_destroy_inode(struct inode *inode)
"%s: deallocated %p destroying inode %pU\n",
__func__, orangefs_inode, get_khandle_from_ino(inode));
- kmem_cache_free(orangefs_inode_cache, orangefs_inode);
+ call_rcu(&inode->i_rcu, orangefs_i_callback);
}
/*
diff --git a/fs/pnode.c b/fs/pnode.c
index 234a9ac49958..b394ca5307ec 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -324,6 +324,21 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp,
return ret;
}
+static struct mount *find_topper(struct mount *mnt)
+{
+ /* If there is exactly one mount covering mnt completely return it. */
+ struct mount *child;
+
+ if (!list_is_singular(&mnt->mnt_mounts))
+ return NULL;
+
+ child = list_first_entry(&mnt->mnt_mounts, struct mount, mnt_child);
+ if (child->mnt_mountpoint != mnt->mnt.mnt_root)
+ return NULL;
+
+ return child;
+}
+
/*
* return true if the refcount is greater than count
*/
@@ -344,9 +359,8 @@ static inline int do_refcount_check(struct mount *mnt, int count)
*/
int propagate_mount_busy(struct mount *mnt, int refcnt)
{
- struct mount *m, *child;
+ struct mount *m, *child, *topper;
struct mount *parent = mnt->mnt_parent;
- int ret = 0;
if (mnt == parent)
return do_refcount_check(mnt, refcnt);
@@ -361,12 +375,24 @@ int propagate_mount_busy(struct mount *mnt, int refcnt)
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
- child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint);
- if (child && list_empty(&child->mnt_mounts) &&
- (ret = do_refcount_check(child, 1)))
- break;
+ int count = 1;
+ child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint);
+ if (!child)
+ continue;
+
+ /* Is there exactly one mount on the child that covers
+ * it completely whose reference should be ignored?
+ */
+ topper = find_topper(child);
+ if (topper)
+ count += 1;
+ else if (!list_empty(&child->mnt_mounts))
+ continue;
+
+ if (do_refcount_check(child, count))
+ return 1;
}
- return ret;
+ return 0;
}
/*
@@ -383,7 +409,7 @@ void propagate_mount_unlock(struct mount *mnt)
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
- child = __lookup_mnt_last(&m->mnt, mnt->mnt_mountpoint);
+ child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint);
if (child)
child->mnt.mnt_flags &= ~MNT_LOCKED;
}
@@ -401,9 +427,11 @@ static void mark_umount_candidates(struct mount *mnt)
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
- struct mount *child = __lookup_mnt_last(&m->mnt,
+ struct mount *child = __lookup_mnt(&m->mnt,
mnt->mnt_mountpoint);
- if (child && (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m))) {
+ if (!child || (child->mnt.mnt_flags & MNT_UMOUNT))
+ continue;
+ if (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m)) {
SET_MNT_MARK(child);
}
}
@@ -422,8 +450,8 @@ static void __propagate_umount(struct mount *mnt)
for (m = propagation_next(parent, parent); m;
m = propagation_next(m, parent)) {
-
- struct mount *child = __lookup_mnt_last(&m->mnt,
+ struct mount *topper;
+ struct mount *child = __lookup_mnt(&m->mnt,
mnt->mnt_mountpoint);
/*
* umount the child only if the child has no children
@@ -432,6 +460,15 @@ static void __propagate_umount(struct mount *mnt)
if (!child || !IS_MNT_MARKED(child))
continue;
CLEAR_MNT_MARK(child);
+
+ /* If there is exactly one mount covering all of child
+ * replace child with that mount.
+ */
+ topper = find_topper(child);
+ if (topper)
+ mnt_change_mountpoint(child->mnt_parent, child->mnt_mp,
+ topper);
+
if (list_empty(&child->mnt_mounts)) {
list_del_init(&child->mnt_child);
child->mnt.mnt_flags |= MNT_UMOUNT;
diff --git a/fs/pnode.h b/fs/pnode.h
index 550f5a8b4fcf..dc87e65becd2 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -49,6 +49,8 @@ int get_dominating_id(struct mount *mnt, const struct path *root);
unsigned int mnt_get_count(struct mount *mnt);
void mnt_set_mountpoint(struct mount *, struct mountpoint *,
struct mount *);
+void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
+ struct mount *mnt);
struct mount *copy_tree(struct mount *, struct dentry *, int);
bool is_path_reachable(struct mount *, struct dentry *,
const struct path *root);
diff --git a/fs/super.c b/fs/super.c
index c183835566c1..1058bf3e8724 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -470,7 +470,7 @@ struct super_block *sget_userns(struct file_system_type *type,
struct super_block *old;
int err;
- if (!(flags & MS_KERNMOUNT) &&
+ if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) &&
!(type->fs_flags & FS_USERNS_MOUNT) &&
!capable(CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
@@ -500,7 +500,7 @@ struct super_block *sget_userns(struct file_system_type *type,
}
if (!s) {
spin_unlock(&sb_lock);
- s = alloc_super(type, flags, user_ns);
+ s = alloc_super(type, (flags & ~MS_SUBMOUNT), user_ns);
if (!s)
return ERR_PTR(-ENOMEM);
goto retry;
@@ -541,8 +541,15 @@ struct super_block *sget(struct file_system_type *type,
{
struct user_namespace *user_ns = current_user_ns();
+ /* We don't yet pass the user namespace of the parent
+ * mount through to here so always use &init_user_ns
+ * until that changes.
+ */
+ if (flags & MS_SUBMOUNT)
+ user_ns = &init_user_ns;
+
/* Ensure the requestor has permissions over the target filesystem */
- if (!(flags & MS_KERNMOUNT) && !ns_capable(user_ns, CAP_SYS_ADMIN))
+ if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT)) && !ns_capable(user_ns, CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
return sget_userns(type, test, set, flags, user_ns, data);
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 9a9041784dcf..412906609954 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -57,7 +57,7 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
case CEPH_POOL_TYPE_EC:
return false;
default:
- BUG_ON(1);
+ BUG();
}
}
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 1b413a9aab81..b20a0945b550 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -96,9 +96,10 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
const char *dest);
+typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
struct dentry *debugfs_create_automount(const char *name,
struct dentry *parent,
- struct vfsmount *(*f)(void *),
+ debugfs_automount_t f,
void *data);
void debugfs_remove(struct dentry *dentry);
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 8458c5351e56..77e7af32543f 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -70,6 +70,8 @@ struct nd_cmd_desc {
struct nd_interleave_set {
u64 cookie;
+ /* compatibility with initial buggy Linux implementation */
+ u64 altcookie;
};
struct nd_mapping_desc {
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index c15373894a42..b37dee3acaba 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -355,7 +355,8 @@ static inline int nlm_privileged_requester(const struct svc_rqst *rqstp)
static inline int nlm_compare_locks(const struct file_lock *fl1,
const struct file_lock *fl2)
{
- return fl1->fl_pid == fl2->fl_pid
+ return file_inode(fl1->fl_file) == file_inode(fl2->fl_file)
+ && fl1->fl_pid == fl2->fl_pid
&& fl1->fl_owner == fl2->fl_owner
&& fl1->fl_start == fl2->fl_start
&& fl1->fl_end == fl2->fl_end
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 1172cce949a4..e0f3a82eee6d 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -90,6 +90,9 @@ struct file_system_type;
extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,
int flags, const char *name,
void *data);
+extern struct vfsmount *vfs_submount(const struct dentry *mountpoint,
+ struct file_system_type *type,
+ const char *name, void *data);
extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);
extern void mark_mounts_for_expiry(struct list_head *mounts);
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 48bc1ac1da43..6233e8fd95b5 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -732,6 +732,7 @@ struct se_lun {
struct config_group lun_group;
struct se_port_stat_grps port_stat_grps;
struct completion lun_ref_comp;
+ struct completion lun_shutdown_comp;
struct percpu_ref lun_ref;
struct list_head lun_dev_link;
struct hlist_node link;
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index acb2b6152ba0..474995568f35 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -132,6 +132,7 @@ struct inodes_stat_t {
#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
/* These sb flags are internal to the kernel */
+#define MS_SUBMOUNT (1<<26)
#define MS_NOREMOTELOCK (1<<27)
#define MS_NOSEC (1<<28)
#define MS_BORN (1<<29)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8696ce6bf2f6..90b66ed6f0e2 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -7241,7 +7241,7 @@ init_tracer_tracefs(struct trace_array *tr, struct dentry *d_tracer)
ftrace_init_tracefs(tr, d_tracer);
}
-static struct vfsmount *trace_automount(void *ingore)
+static struct vfsmount *trace_automount(struct dentry *mntpt, void *ingore)
{
struct vfsmount *mnt;
struct file_system_type *type;
@@ -7254,7 +7254,7 @@ static struct vfsmount *trace_automount(void *ingore)
type = get_fs_type("tracefs");
if (!type)
return NULL;
- mnt = vfs_kern_mount(type, 0, "tracefs", NULL);
+ mnt = vfs_submount(mntpt, type, "tracefs", NULL);
put_filesystem(type);
if (IS_ERR(mnt))
return NULL;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4c6ade54d833..0de26691f0f5 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4139,17 +4139,22 @@ static void free_mem_cgroup_per_node_info(struct mem_cgroup *memcg, int node)
kfree(memcg->nodeinfo[node]);
}
-static void mem_cgroup_free(struct mem_cgroup *memcg)
+static void __mem_cgroup_free(struct mem_cgroup *memcg)
{
int node;
- memcg_wb_domain_exit(memcg);
for_each_node(node)
free_mem_cgroup_per_node_info(memcg, node);
free_percpu(memcg->stat);
kfree(memcg);
}
+static void mem_cgroup_free(struct mem_cgroup *memcg)
+{
+ memcg_wb_domain_exit(memcg);
+ __mem_cgroup_free(memcg);
+}
+
static struct mem_cgroup *mem_cgroup_alloc(void)
{
struct mem_cgroup *memcg;
@@ -4200,7 +4205,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
fail:
if (memcg->id.id > 0)
idr_remove(&mem_cgroup_idr, memcg->id.id);
- mem_cgroup_free(memcg);
+ __mem_cgroup_free(memcg);
return NULL;
}
diff --git a/mm/mlock.c b/mm/mlock.c
index cdbed8aaa426..665ab75b5533 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -441,7 +441,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
while (start < end) {
struct page *page;
- unsigned int page_mask;
+ unsigned int page_mask = 0;
unsigned long page_increm;
struct pagevec pvec;
struct zone *zone;
@@ -455,8 +455,7 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
* suits munlock very well (and if somehow an abnormal page
* has sneaked into the range, we won't oops here: great).
*/
- page = follow_page_mask(vma, start, FOLL_GET | FOLL_DUMP,
- &page_mask);
+ page = follow_page(vma, start, FOLL_GET | FOLL_DUMP);
if (page && !IS_ERR(page)) {
if (PageTransTail(page)) {
@@ -467,8 +466,8 @@ void munlock_vma_pages_range(struct vm_area_struct *vma,
/*
* Any THP page found by follow_page_mask() may
* have gotten split before reaching
- * munlock_vma_page(), so we need to recompute
- * the page_mask here.
+ * munlock_vma_page(), so we need to compute
+ * the page_mask here instead.
*/
page_mask = munlock_vma_page(page);
unlock_page(page);
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 3b5fd4188f2a..58ad23a44109 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -398,6 +398,7 @@ void __ieee80211_start_rx_ba_session(struct sta_info *sta,
tid_agg_rx->timeout = timeout;
tid_agg_rx->stored_mpdu_num = 0;
tid_agg_rx->auto_seq = auto_seq;
+ tid_agg_rx->started = false;
tid_agg_rx->reorder_buf_filtered = 0;
status = WLAN_STATUS_SUCCESS;
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 28a3a0957c9e..76a8bcd8ef11 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -168,6 +168,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
break;
}
+ flush_delayed_work(&sdata->dec_tailroom_needed_wk);
drv_remove_interface(local, sdata);
}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 2384b4aae064..a697ddf56334 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4,7 +4,7 @@
* Copyright 2006-2007 Jiri Benc <jbenc@...e.cz>
* Copyright 2007-2010 Johannes Berg <johannes@...solutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
- * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
+ * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -1034,6 +1034,18 @@ static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_sub_if_data *sdata
buf_size = tid_agg_rx->buf_size;
head_seq_num = tid_agg_rx->head_seq_num;
+ /*
+ * If the current MPDU's SN is smaller than the SSN, it shouldn't
+ * be reordered.
+ */
+ if (unlikely(!tid_agg_rx->started)) {
+ if (ieee80211_sn_less(mpdu_seq_num, head_seq_num)) {
+ ret = false;
+ goto out;
+ }
+ tid_agg_rx->started = true;
+ }
+
/* frame with out of date sequence number */
if (ieee80211_sn_less(mpdu_seq_num, head_seq_num)) {
dev_kfree_skb(skb);
@@ -4080,15 +4092,17 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
ieee80211_is_beacon(hdr->frame_control)))
ieee80211_scan_rx(local, skb);
- if (pubsta) {
- rx.sta = container_of(pubsta, struct sta_info, sta);
- rx.sdata = rx.sta->sdata;
- if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
- return;
- goto out;
- } else if (ieee80211_is_data(fc)) {
+ if (ieee80211_is_data(fc)) {
struct sta_info *sta, *prev_sta;
+ if (pubsta) {
+ rx.sta = container_of(pubsta, struct sta_info, sta);
+ rx.sdata = rx.sta->sdata;
+ if (ieee80211_prepare_and_rx_handle(&rx, skb, true))
+ return;
+ goto out;
+ }
+
prev_sta = NULL;
for_each_sta_info(local, hdr->addr2, sta, tmp) {
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index dd06ef0b8861..15599c70a38f 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -189,6 +189,7 @@ struct tid_ampdu_tx {
* @auto_seq: used for offloaded BA sessions to automatically pick head_seq_and
* and ssn.
* @removed: this session is removed (but might have been found due to RCU)
+ * @started: this session has started (head ssn or higher was received)
*
* This structure's lifetime is managed by RCU, assignments to
* the array holding it must hold the aggregation mutex.
@@ -212,8 +213,9 @@ struct tid_ampdu_rx {
u16 ssn;
u16 buf_size;
u16 timeout;
- bool auto_seq;
- bool removed;
+ u8 auto_seq:1,
+ removed:1,
+ started:1;
};
/**
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index ddf71c648cab..ad37b4e58c2f 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -51,7 +51,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
struct ieee80211_hdr *hdr = (void *)skb->data;
int ac;
- if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER) {
+ if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
+ IEEE80211_TX_CTL_AMPDU)) {
ieee80211_free_txskb(&local->hw, skb);
return;
}
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index d08e214ec6e7..223d88e25e05 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -2629,7 +2629,7 @@ sub do_run_test {
}
waitpid $child_pid, 0;
- $child_exit = $?;
+ $child_exit = $? >> 8;
my $end_time = time;
$test_time = $end_time - $start_time;
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