commit: 570042a6e334a7323c64de1d1be1c175e20be531 Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> AuthorDate: Wed Mar 15 14:39:00 2017 +0000 Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> CommitDate: Wed Mar 15 14:39:00 2017 +0000 URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=570042a6
Linux patch 4.4.54 0000_README | 4 + 1053_linux-4.4.54.patch | 1624 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 1628 insertions(+) diff --git a/0000_README b/0000_README index ef8c400..f7a9d57 100644 --- a/0000_README +++ b/0000_README @@ -255,6 +255,10 @@ Patch: 1052_linux-4.4.53.patch From: http://www.kernel.org Desc: Linux 4.4.53 +Patch: 1053_linux-4.4.54.patch +From: http://www.kernel.org +Desc: Linux 4.4.54 + Patch: 1500_XATTR_USER_PREFIX.patch From: https://bugs.gentoo.org/show_bug.cgi?id=470644 Desc: Support for namespace user.pax.* on tmpfs. diff --git a/1053_linux-4.4.54.patch b/1053_linux-4.4.54.patch new file mode 100644 index 0000000..ecbe896 --- /dev/null +++ b/1053_linux-4.4.54.patch @@ -0,0 +1,1624 @@ +diff --git a/Makefile b/Makefile +index 10aec937e9e4..7f54ac081cf3 100644 +--- a/Makefile ++++ b/Makefile +@@ -1,6 +1,6 @@ + VERSION = 4 + PATCHLEVEL = 4 +-SUBLEVEL = 53 ++SUBLEVEL = 54 + EXTRAVERSION = + NAME = Blurry Fish Butt + +diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h +index c1ea67db8404..c61ed7890cef 100644 +--- a/arch/s390/include/asm/processor.h ++++ b/arch/s390/include/asm/processor.h +@@ -74,7 +74,8 @@ 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/setup.c b/arch/s390/kernel/setup.c +index 1f581eb61bc2..d097d71685df 100644 +--- a/arch/s390/kernel/setup.c ++++ b/arch/s390/kernel/setup.c +@@ -805,10 +805,10 @@ 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 575dc123bda2..23e3f5d77a24 100644 +--- a/arch/s390/kvm/kvm-s390.c ++++ b/arch/s390/kvm/kvm-s390.c +@@ -295,6 +295,9 @@ 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/kvm/vmx.c b/arch/x86/kvm/vmx.c +index 64f60a48def1..3a7ae80dc49d 100644 +--- a/arch/x86/kvm/vmx.c ++++ b/arch/x86/kvm/vmx.c +@@ -3499,7 +3499,7 @@ 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)); + } +@@ -7905,7 +7905,7 @@ 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/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c +index 9735691f37f1..49ccbd9022f6 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/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c +index 0beaa52df66b..5df8e1234505 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) }, +@@ -160,6 +161,7 @@ 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 c306b483de60..cd6b141b9825 100644 +--- a/drivers/bluetooth/btusb.c ++++ b/drivers/bluetooth/btusb.c +@@ -208,6 +208,7 @@ 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/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +index c161eeda417b..267749a94c5a 100644 +--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +@@ -3704,9 +3704,15 @@ 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 1ac29d703c12..ea443fafb934 100644 +--- a/drivers/gpu/drm/drm_atomic_helper.c ++++ b/drivers/gpu/drm/drm_atomic_helper.c +@@ -265,7 +265,7 @@ 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 8c9ac021608f..cc1e16fd7e76 100644 +--- a/drivers/gpu/drm/drm_edid.c ++++ b/drivers/gpu/drm/drm_edid.c +@@ -144,6 +144,9 @@ 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/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c +index 3f802163f7d4..e7c18519274a 100644 +--- a/drivers/gpu/drm/i915/intel_pm.c ++++ b/drivers/gpu/drm/i915/intel_pm.c +@@ -6803,7 +6803,18 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) + + static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv) + { +- I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE); ++ u32 val; ++ ++ /* ++ * On driver load, a pipe may be active and driving a DSI display. ++ * Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck ++ * (and never recovering) in this case. intel_dsi_post_disable() will ++ * clear it when we turn off the display. ++ */ ++ val = I915_READ(DSPCLK_GATE_D); ++ val &= DPOUNIT_CLOCK_GATE_DISABLE; ++ val |= VRHUNIT_CLOCK_GATE_DISABLE; ++ I915_WRITE(DSPCLK_GATE_D, val); + + /* + * Disable trickle feed and enable pnd deadline calculation +diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c +index 4ae8b56b1847..037c38bb5333 100644 +--- a/drivers/gpu/drm/ttm/ttm_bo.c ++++ b/drivers/gpu/drm/ttm/ttm_bo.c +@@ -1621,7 +1621,6 @@ 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) { +@@ -1657,7 +1656,8 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) + if (unlikely(ret != 0)) + goto out; + +- 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/hv/hv.c b/drivers/hv/hv.c +index 89fd0113aa5c..57c191798699 100644 +--- a/drivers/hv/hv.c ++++ b/drivers/hv/hv.c +@@ -219,7 +219,7 @@ 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/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c +index 3ba7de5f9379..2018d24344de 100644 +--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c ++++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c +@@ -1488,12 +1488,14 @@ 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 8a4d10452d61..8efcff1beb8f 100644 +--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c ++++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c +@@ -464,8 +464,7 @@ 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")) { +@@ -474,8 +473,7 @@ 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; +@@ -628,6 +626,14 @@ void ipoib_mark_paths_invalid(struct net_device *dev) + spin_unlock_irq(&priv->lock); + } + ++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); +@@ -852,8 +858,7 @@ 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", +@@ -871,10 +876,12 @@ 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); +@@ -910,8 +917,7 @@ 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; +@@ -943,8 +949,7 @@ 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; +@@ -1025,8 +1030,7 @@ send_using_neigh: + } + + 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); +@@ -1058,7 +1062,6 @@ 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); +@@ -1071,8 +1074,7 @@ 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 5f0f4fc58f43..e397f1b0af09 100644 +--- a/drivers/infiniband/ulp/srp/ib_srp.c ++++ b/drivers/infiniband/ulp/srp/ib_srp.c +@@ -1787,17 +1787,24 @@ 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, +@@ -2469,19 +2476,18 @@ 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. +@@ -2504,10 +2510,16 @@ 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))) { +@@ -2516,13 +2528,15 @@ 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) +@@ -2548,7 +2562,7 @@ 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; +@@ -2566,14 +2580,15 @@ 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++) { +diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h +index f6af531f9f32..109eea94d0f9 100644 +--- a/drivers/infiniband/ulp/srp/ib_srp.h ++++ b/drivers/infiniband/ulp/srp/ib_srp.h +@@ -168,6 +168,7 @@ 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/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c +index 25aba9886990..0e67145bc418 100644 +--- a/drivers/net/ethernet/marvell/mvpp2.c ++++ b/drivers/net/ethernet/marvell/mvpp2.c +@@ -993,7 +993,7 @@ 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/ieee802154/fakelb.c b/drivers/net/ieee802154/fakelb.c +index 860d4aed8274..43617ded3773 100644 +--- a/drivers/net/ieee802154/fakelb.c ++++ b/drivers/net/ieee802154/fakelb.c +@@ -30,7 +30,7 @@ + static int numlbs = 2; + + static LIST_HEAD(fakelb_phys); +-static DEFINE_SPINLOCK(fakelb_phys_lock); ++static DEFINE_MUTEX(fakelb_phys_lock); + + static LIST_HEAD(fakelb_ifup_phys); + static DEFINE_RWLOCK(fakelb_ifup_phys_lock); +@@ -180,9 +180,9 @@ static int fakelb_add_one(struct device *dev) + if (err) + goto err_reg; + +- spin_lock(&fakelb_phys_lock); ++ mutex_lock(&fakelb_phys_lock); + list_add_tail(&phy->list, &fakelb_phys); +- spin_unlock(&fakelb_phys_lock); ++ mutex_unlock(&fakelb_phys_lock); + + return 0; + +@@ -214,10 +214,10 @@ static int fakelb_probe(struct platform_device *pdev) + return 0; + + err_slave: +- spin_lock(&fakelb_phys_lock); ++ mutex_lock(&fakelb_phys_lock); + list_for_each_entry_safe(phy, tmp, &fakelb_phys, list) + fakelb_del(phy); +- spin_unlock(&fakelb_phys_lock); ++ mutex_unlock(&fakelb_phys_lock); + return err; + } + +@@ -225,10 +225,10 @@ static int fakelb_remove(struct platform_device *pdev) + { + struct fakelb_phy *phy, *tmp; + +- spin_lock(&fakelb_phys_lock); ++ mutex_lock(&fakelb_phys_lock); + list_for_each_entry_safe(phy, tmp, &fakelb_phys, list) + fakelb_del(phy); +- spin_unlock(&fakelb_phys_lock); ++ mutex_unlock(&fakelb_phys_lock); + return 0; + } + +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 94a8f4ab57bc..ae1dc37e4068 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; + addr = (void *) (dev_info->start + offset); + *pfn = virt_to_phys(addr) >> PAGE_SHIFT; +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 356c80fbb304..bb6a6c35324a 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) { +@@ -826,6 +831,7 @@ 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 028854cda97b..2794c6ec5c3c 100644 +--- a/drivers/target/target_core_tpg.c ++++ b/drivers/target/target_core_tpg.c +@@ -539,7 +539,7 @@ 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( +@@ -666,6 +666,7 @@ 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 befe22744802..df2059984e14 100644 +--- a/drivers/target/target_core_transport.c ++++ b/drivers/target/target_core_transport.c +@@ -2680,10 +2680,39 @@ 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 644ddb841d9f..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; +@@ -159,7 +156,8 @@ struct n_hdlc { + /* + * HDLC buffer list manipulation functions + */ +-static void n_hdlc_buf_list_init(struct n_hdlc_buf_list *list); ++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); +@@ -209,16 +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 = { +@@ -284,7 +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() */ +@@ -403,13 +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", +@@ -421,7 +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 */ +@@ -436,10 +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); + +@@ -449,10 +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; + } + } +@@ -750,7 +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); +@@ -764,8 +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); +@@ -777,8 +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; +@@ -826,14 +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; +@@ -853,11 +841,16 @@ static struct n_hdlc *n_hdlc_alloc(void) + if (!n_hdlc) + return NULL; + +- n_hdlc_buf_list_init(&n_hdlc->rx_free_buf_list); +- n_hdlc_buf_list_init(&n_hdlc->tx_free_buf_list); +- n_hdlc_buf_list_init(&n_hdlc->rx_buf_list); +- n_hdlc_buf_list_init(&n_hdlc->tx_buf_list); +- ++ spin_lock_init(&n_hdlc->rx_free_buf_list.spinlock); ++ 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); +@@ -885,63 +878,65 @@ static struct n_hdlc *n_hdlc_alloc(void) + } /* end of n_hdlc_alloc() */ + + /** +- * n_hdlc_buf_list_init - initialize specified HDLC buffer list +- * @list - pointer to buffer list ++ * 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_list_init(struct n_hdlc_buf_list *list) ++static void n_hdlc_buf_return(struct n_hdlc_buf_list *buf_list, ++ struct n_hdlc_buf *buf) + { +- memset(list, 0, sizeof(*list)); +- spin_lock_init(&list->spinlock); +-} /* end of n_hdlc_buf_list_init() */ ++ 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 029de3f99752..5b24ffd93649 100644 +--- a/drivers/tty/serial/8250/8250_pci.c ++++ b/drivers/tty/serial/8250/8250_pci.c +@@ -2880,6 +2880,8 @@ 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, + +@@ -3113,6 +3115,13 @@ 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, +@@ -5778,6 +5787,10 @@ 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/ceph/mds_client.c b/fs/ceph/mds_client.c +index 239bc9cba28c..f54f77037d22 100644 +--- a/fs/ceph/mds_client.c ++++ b/fs/ceph/mds_client.c +@@ -644,6 +644,9 @@ 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; +@@ -1051,7 +1054,6 @@ 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); +@@ -2477,7 +2479,6 @@ 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/fat/inode.c b/fs/fat/inode.c +index 509411dd3698..cf644d52c0cf 100644 +--- a/fs/fat/inode.c ++++ b/fs/fat/inode.c +@@ -1269,6 +1269,16 @@ out: + 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); +@@ -1713,12 +1723,13 @@ 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 14db05d424f7..3dc7dea5a357 100644 +--- a/fs/mount.h ++++ b/fs/mount.h +@@ -86,7 +86,6 @@ 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/namespace.c b/fs/namespace.c +index da98a1bbd8b5..7df3d406d3e0 100644 +--- a/fs/namespace.c ++++ b/fs/namespace.c +@@ -638,28 +638,6 @@ 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 +@@ -879,6 +857,13 @@ 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 + */ +@@ -887,28 +872,45 @@ 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; +@@ -923,7 +925,7 @@ static void commit_tree(struct mount *mnt, struct mount *shadows) + + list_splice(&head, n->list.prev); + +- attach_shadowed(mnt, parent, shadows); ++ __attach_mnt(mnt, parent); + touch_mnt_namespace(n); + } + +@@ -1718,7 +1720,6 @@ 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); +@@ -1740,14 +1741,7 @@ 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(); + } + } +@@ -1925,10 +1919,18 @@ static int attach_recursive_mnt(struct mount *source_mnt, + struct path *parent_path) + { + HLIST_HEAD(tree_list); ++ 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); ++ + if (IS_MNT_SHARED(dest_mnt)) { + err = invent_group_ids(source_mnt, true); + if (err) +@@ -1948,16 +1950,19 @@ 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; +@@ -1970,6 +1975,10 @@ static int attach_recursive_mnt(struct mount *source_mnt, + unlock_mount_hash(); + cleanup_group_ids(source_mnt, NULL); + out: ++ read_seqlock_excl(&mount_lock); ++ put_mountpoint(smp); ++ read_sequnlock_excl(&mount_lock); ++ + return err; + } + +diff --git a/fs/pnode.c b/fs/pnode.c +index 99899705b105..b9f2af59b9a6 100644 +--- a/fs/pnode.c ++++ b/fs/pnode.c +@@ -324,6 +324,21 @@ out: + 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 0fcdbe7ca648..623f01772bec 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/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h +index e55c08bc3a96..0abc56140c83 100644 +--- a/include/linux/ceph/osdmap.h ++++ b/include/linux/ceph/osdmap.h +@@ -49,7 +49,7 @@ 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/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/target/target_core_base.h b/include/target/target_core_base.h +index 800fe16cc36f..ed66414b91f0 100644 +--- a/include/target/target_core_base.h ++++ b/include/target/target_core_base.h +@@ -740,6 +740,7 @@ 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/net/mac80211/pm.c b/net/mac80211/pm.c +index 00a43a70e1fc..0402fa45b343 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/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;
