From: "Mike Pagano" <mpagano@gentoo.org>
To: gentoo-commits@lists.gentoo.org
Subject: [gentoo-commits] proj/linux-patches:3.10 commit in: /
Date: Tue, 1 Jul 2014 12:57:58 +0000 (UTC) [thread overview]
Message-ID: <1404219369.c3b8cdff3ec2e875c878cb8d33fc566ed0ddcd44.mpagano@gentoo> (raw)
commit: c3b8cdff3ec2e875c878cb8d33fc566ed0ddcd44
Author: Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Tue Jul 1 12:56:09 2014 +0000
Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Tue Jul 1 12:56:09 2014 +0000
URL: http://git.overlays.gentoo.org/gitweb/?p=proj/linux-patches.git;a=commit;h=c3b8cdff
Linux patch 3.10.46
---
0000_README | 4 +
1045_linux-3.10.46.patch | 2568 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2572 insertions(+)
diff --git a/0000_README b/0000_README
index e9422c2..6ec8c6d 100644
--- a/0000_README
+++ b/0000_README
@@ -222,6 +222,10 @@ Patch: 1044_linux-3.10.45.patch
From: http://www.kernel.org
Desc: Linux 3.10.45
+Patch: 1045_linux-3.10.46.patch
+From: http://www.kernel.org
+Desc: Linux 3.10.46
+
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/1045_linux-3.10.46.patch b/1045_linux-3.10.46.patch
new file mode 100644
index 0000000..2c60904
--- /dev/null
+++ b/1045_linux-3.10.46.patch
@@ -0,0 +1,2568 @@
+diff --git a/Makefile b/Makefile
+index 8a63ca1db77a..c226f110181d 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 3
+ PATCHLEVEL = 10
+-SUBLEVEL = 45
++SUBLEVEL = 46
+ EXTRAVERSION =
+ NAME = TOSSUG Baby Fish
+
+diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c
+index af4e8c8a5422..6582c4adc182 100644
+--- a/arch/arm/kernel/stacktrace.c
++++ b/arch/arm/kernel/stacktrace.c
+@@ -83,13 +83,16 @@ static int save_trace(struct stackframe *frame, void *d)
+ return trace->nr_entries >= trace->max_entries;
+ }
+
+-void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
++/* This must be noinline to so that our skip calculation works correctly */
++static noinline void __save_stack_trace(struct task_struct *tsk,
++ struct stack_trace *trace, unsigned int nosched)
+ {
+ struct stack_trace_data data;
+ struct stackframe frame;
+
+ data.trace = trace;
+ data.skip = trace->skip;
++ data.no_sched_functions = nosched;
+
+ if (tsk != current) {
+ #ifdef CONFIG_SMP
+@@ -102,7 +105,6 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+ return;
+ #else
+- data.no_sched_functions = 1;
+ frame.fp = thread_saved_fp(tsk);
+ frame.sp = thread_saved_sp(tsk);
+ frame.lr = 0; /* recovered from the stack */
+@@ -111,11 +113,12 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
+ } else {
+ register unsigned long current_sp asm ("sp");
+
+- data.no_sched_functions = 0;
++ /* We don't want this function nor the caller */
++ data.skip += 2;
+ frame.fp = (unsigned long)__builtin_frame_address(0);
+ frame.sp = current_sp;
+ frame.lr = (unsigned long)__builtin_return_address(0);
+- frame.pc = (unsigned long)save_stack_trace_tsk;
++ frame.pc = (unsigned long)__save_stack_trace;
+ }
+
+ walk_stackframe(&frame, save_trace, &data);
+@@ -123,9 +126,14 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
+ trace->entries[trace->nr_entries++] = ULONG_MAX;
+ }
+
++void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
++{
++ __save_stack_trace(tsk, trace, 1);
++}
++
+ void save_stack_trace(struct stack_trace *trace)
+ {
+- save_stack_trace_tsk(current, trace);
++ __save_stack_trace(current, trace, 0);
+ }
+ EXPORT_SYMBOL_GPL(save_stack_trace);
+ #endif
+diff --git a/arch/arm/mach-omap1/board-h2.c b/arch/arm/mach-omap1/board-h2.c
+index 0dac3d239e32..d712c5172237 100644
+--- a/arch/arm/mach-omap1/board-h2.c
++++ b/arch/arm/mach-omap1/board-h2.c
+@@ -379,7 +379,7 @@ static struct omap_usb_config h2_usb_config __initdata = {
+ /* usb1 has a Mini-AB port and external isp1301 transceiver */
+ .otg = 2,
+
+-#ifdef CONFIG_USB_GADGET_OMAP
++#if IS_ENABLED(CONFIG_USB_OMAP)
+ .hmc_mode = 19, /* 0:host(off) 1:dev|otg 2:disabled */
+ /* .hmc_mode = 21,*/ /* 0:host(off) 1:dev(loopback) 2:host(loopback) */
+ #elif defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+diff --git a/arch/arm/mach-omap1/board-h3.c b/arch/arm/mach-omap1/board-h3.c
+index 816ecd13f81e..bfed4f928663 100644
+--- a/arch/arm/mach-omap1/board-h3.c
++++ b/arch/arm/mach-omap1/board-h3.c
+@@ -366,7 +366,7 @@ static struct omap_usb_config h3_usb_config __initdata = {
+ /* usb1 has a Mini-AB port and external isp1301 transceiver */
+ .otg = 2,
+
+-#ifdef CONFIG_USB_GADGET_OMAP
++#if IS_ENABLED(CONFIG_USB_OMAP)
+ .hmc_mode = 19, /* 0:host(off) 1:dev|otg 2:disabled */
+ #elif defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+ /* NONSTANDARD CABLE NEEDED (B-to-Mini-B) */
+diff --git a/arch/arm/mach-omap1/board-innovator.c b/arch/arm/mach-omap1/board-innovator.c
+index bd5f02e9c354..c49ce83cc1eb 100644
+--- a/arch/arm/mach-omap1/board-innovator.c
++++ b/arch/arm/mach-omap1/board-innovator.c
+@@ -312,7 +312,7 @@ static struct omap_usb_config h2_usb_config __initdata = {
+ /* usb1 has a Mini-AB port and external isp1301 transceiver */
+ .otg = 2,
+
+-#ifdef CONFIG_USB_GADGET_OMAP
++#if IS_ENABLED(CONFIG_USB_OMAP)
+ .hmc_mode = 19, /* 0:host(off) 1:dev|otg 2:disabled */
+ /* .hmc_mode = 21,*/ /* 0:host(off) 1:dev(loopback) 2:host(loopback) */
+ #elif defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c
+index a7ce69286688..006fbb5f9654 100644
+--- a/arch/arm/mach-omap1/board-osk.c
++++ b/arch/arm/mach-omap1/board-osk.c
+@@ -280,7 +280,7 @@ static struct omap_usb_config osk_usb_config __initdata = {
+ * be used, with a NONSTANDARD gender-bending cable/dongle, as
+ * a peripheral.
+ */
+-#ifdef CONFIG_USB_GADGET_OMAP
++#if IS_ENABLED(CONFIG_USB_OMAP)
+ .register_dev = 1,
+ .hmc_mode = 0,
+ #else
+diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S
+index 6ba4bd9118f2..6f3b0476b729 100644
+--- a/arch/arm/mm/proc-v7-3level.S
++++ b/arch/arm/mm/proc-v7-3level.S
+@@ -56,6 +56,14 @@ ENTRY(cpu_v7_switch_mm)
+ mov pc, lr
+ ENDPROC(cpu_v7_switch_mm)
+
++#ifdef __ARMEB__
++#define rl r3
++#define rh r2
++#else
++#define rl r2
++#define rh r3
++#endif
++
+ /*
+ * cpu_v7_set_pte_ext(ptep, pte)
+ *
+@@ -65,13 +73,13 @@ ENDPROC(cpu_v7_switch_mm)
+ */
+ ENTRY(cpu_v7_set_pte_ext)
+ #ifdef CONFIG_MMU
+- tst r2, #L_PTE_VALID
++ tst rl, #L_PTE_VALID
+ beq 1f
+- tst r3, #1 << (57 - 32) @ L_PTE_NONE
+- bicne r2, #L_PTE_VALID
++ tst rh, #1 << (57 - 32) @ L_PTE_NONE
++ bicne rl, #L_PTE_VALID
+ bne 1f
+- tst r3, #1 << (55 - 32) @ L_PTE_DIRTY
+- orreq r2, #L_PTE_RDONLY
++ tst rh, #1 << (55 - 32) @ L_PTE_DIRTY
++ orreq rl, #L_PTE_RDONLY
+ 1: strd r2, r3, [r0]
+ ALT_SMP(W(nop))
+ ALT_UP (mcr p15, 0, r0, c7, c10, 1) @ flush_pte
+diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
+index 5341534b6d04..85536688f753 100644
+--- a/arch/arm64/kernel/ptrace.c
++++ b/arch/arm64/kernel/ptrace.c
+@@ -872,6 +872,7 @@ static int compat_ptrace_write_user(struct task_struct *tsk, compat_ulong_t off,
+ compat_ulong_t val)
+ {
+ int ret;
++ mm_segment_t old_fs = get_fs();
+
+ if (off & 3 || off >= COMPAT_USER_SZ)
+ return -EIO;
+@@ -879,10 +880,13 @@ static int compat_ptrace_write_user(struct task_struct *tsk, compat_ulong_t off,
+ if (off >= sizeof(compat_elf_gregset_t))
+ return 0;
+
++ set_fs(KERNEL_DS);
+ ret = copy_regset_from_user(tsk, &user_aarch32_view,
+ REGSET_COMPAT_GPR, off,
+ sizeof(compat_ulong_t),
+ &val);
++ set_fs(old_fs);
++
+ return ret;
+ }
+
+diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
+index bbf8141408cd..2bed4f02a558 100644
+--- a/arch/s390/include/asm/lowcore.h
++++ b/arch/s390/include/asm/lowcore.h
+@@ -142,9 +142,9 @@ struct _lowcore {
+ __u8 pad_0x02fc[0x0300-0x02fc]; /* 0x02fc */
+
+ /* Interrupt response block */
+- __u8 irb[64]; /* 0x0300 */
++ __u8 irb[96]; /* 0x0300 */
+
+- __u8 pad_0x0340[0x0e00-0x0340]; /* 0x0340 */
++ __u8 pad_0x0360[0x0e00-0x0360]; /* 0x0360 */
+
+ /*
+ * 0xe00 contains the address of the IPL Parameter Information
+@@ -288,12 +288,13 @@ struct _lowcore {
+ __u8 pad_0x03a0[0x0400-0x03a0]; /* 0x03a0 */
+
+ /* Interrupt response block. */
+- __u8 irb[64]; /* 0x0400 */
++ __u8 irb[96]; /* 0x0400 */
++ __u8 pad_0x0460[0x0480-0x0460]; /* 0x0460 */
+
+ /* Per cpu primary space access list */
+- __u32 paste[16]; /* 0x0440 */
++ __u32 paste[16]; /* 0x0480 */
+
+- __u8 pad_0x0480[0x0e00-0x0480]; /* 0x0480 */
++ __u8 pad_0x04c0[0x0e00-0x04c0]; /* 0x04c0 */
+
+ /*
+ * 0xe00 contains the address of the IPL Parameter Information
+diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
+index 94e52cf064b0..ac6328176097 100644
+--- a/arch/x86/kernel/entry_32.S
++++ b/arch/x86/kernel/entry_32.S
+@@ -434,9 +434,10 @@ sysenter_past_esp:
+ jnz sysenter_audit
+ sysenter_do_call:
+ cmpl $(NR_syscalls), %eax
+- jae syscall_badsys
++ jae sysenter_badsys
+ call *sys_call_table(,%eax,4)
+ movl %eax,PT_EAX(%esp)
++sysenter_after_call:
+ LOCKDEP_SYS_EXIT
+ DISABLE_INTERRUPTS(CLBR_ANY)
+ TRACE_IRQS_OFF
+@@ -554,11 +555,6 @@ ENTRY(iret_exc)
+
+ CFI_RESTORE_STATE
+ ldt_ss:
+- larl PT_OLDSS(%esp), %eax
+- jnz restore_nocheck
+- testl $0x00400000, %eax # returning to 32bit stack?
+- jnz restore_nocheck # allright, normal return
+-
+ #ifdef CONFIG_PARAVIRT
+ /*
+ * The kernel can't run on a non-flat stack if paravirt mode
+@@ -691,7 +687,12 @@ END(syscall_fault)
+
+ syscall_badsys:
+ movl $-ENOSYS,PT_EAX(%esp)
+- jmp resume_userspace
++ jmp syscall_exit
++END(syscall_badsys)
++
++sysenter_badsys:
++ movl $-ENOSYS,PT_EAX(%esp)
++ jmp sysenter_after_call
+ END(syscall_badsys)
+ CFI_ENDPROC
+ /*
+diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
+index 38ae65dfd14f..63a899304d27 100644
+--- a/arch/x86/syscalls/syscall_64.tbl
++++ b/arch/x86/syscalls/syscall_64.tbl
+@@ -212,10 +212,10 @@
+ 203 common sched_setaffinity sys_sched_setaffinity
+ 204 common sched_getaffinity sys_sched_getaffinity
+ 205 64 set_thread_area
+-206 common io_setup sys_io_setup
++206 64 io_setup sys_io_setup
+ 207 common io_destroy sys_io_destroy
+ 208 common io_getevents sys_io_getevents
+-209 common io_submit sys_io_submit
++209 64 io_submit sys_io_submit
+ 210 common io_cancel sys_io_cancel
+ 211 64 get_thread_area
+ 212 common lookup_dcookie sys_lookup_dcookie
+@@ -356,3 +356,5 @@
+ 540 x32 process_vm_writev compat_sys_process_vm_writev
+ 541 x32 setsockopt compat_sys_setsockopt
+ 542 x32 getsockopt compat_sys_getsockopt
++543 x32 io_setup compat_sys_io_setup
++544 x32 io_submit compat_sys_io_submit
+diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
+index b3e36a81aa4d..ca6d2acafa66 100644
+--- a/drivers/acpi/acpica/utstring.c
++++ b/drivers/acpi/acpica/utstring.c
+@@ -349,7 +349,7 @@ void acpi_ut_print_string(char *string, u8 max_length)
+ }
+
+ acpi_os_printf("\"");
+- for (i = 0; string[i] && (i < max_length); i++) {
++ for (i = 0; (i < max_length) && string[i]; i++) {
+
+ /* Escape sequences */
+
+diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
+index ccba6e46cfb3..b62207a87430 100644
+--- a/drivers/acpi/bus.c
++++ b/drivers/acpi/bus.c
+@@ -57,6 +57,12 @@ EXPORT_SYMBOL(acpi_root_dir);
+
+
+ #ifdef CONFIG_X86
++#ifdef CONFIG_ACPI_CUSTOM_DSDT
++static inline int set_copy_dsdt(const struct dmi_system_id *id)
++{
++ return 0;
++}
++#else
+ static int set_copy_dsdt(const struct dmi_system_id *id)
+ {
+ printk(KERN_NOTICE "%s detected - "
+@@ -64,6 +70,7 @@ static int set_copy_dsdt(const struct dmi_system_id *id)
+ acpi_gbl_copy_dsdt_locally = 1;
+ return 0;
+ }
++#endif
+
+ static struct dmi_system_id dsdt_dmi_table[] __initdata = {
+ /*
+diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
+index bc68a440d432..c4d2f0e48685 100644
+--- a/drivers/bluetooth/hci_ldisc.c
++++ b/drivers/bluetooth/hci_ldisc.c
+@@ -118,10 +118,6 @@ static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu)
+
+ int hci_uart_tx_wakeup(struct hci_uart *hu)
+ {
+- struct tty_struct *tty = hu->tty;
+- struct hci_dev *hdev = hu->hdev;
+- struct sk_buff *skb;
+-
+ if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) {
+ set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
+ return 0;
+@@ -129,6 +125,22 @@ int hci_uart_tx_wakeup(struct hci_uart *hu)
+
+ BT_DBG("");
+
++ schedule_work(&hu->write_work);
++
++ return 0;
++}
++
++static void hci_uart_write_work(struct work_struct *work)
++{
++ struct hci_uart *hu = container_of(work, struct hci_uart, write_work);
++ struct tty_struct *tty = hu->tty;
++ struct hci_dev *hdev = hu->hdev;
++ struct sk_buff *skb;
++
++ /* REVISIT: should we cope with bad skbs or ->write() returning
++ * and error value ?
++ */
++
+ restart:
+ clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
+
+@@ -153,7 +165,6 @@ restart:
+ goto restart;
+
+ clear_bit(HCI_UART_SENDING, &hu->tx_state);
+- return 0;
+ }
+
+ static void hci_uart_init_work(struct work_struct *work)
+@@ -289,6 +300,7 @@ static int hci_uart_tty_open(struct tty_struct *tty)
+ tty->receive_room = 65536;
+
+ INIT_WORK(&hu->init_ready, hci_uart_init_work);
++ INIT_WORK(&hu->write_work, hci_uart_write_work);
+
+ spin_lock_init(&hu->rx_lock);
+
+@@ -326,6 +338,8 @@ static void hci_uart_tty_close(struct tty_struct *tty)
+ if (hdev)
+ hci_uart_close(hdev);
+
++ cancel_work_sync(&hu->write_work);
++
+ if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) {
+ if (hdev) {
+ if (test_bit(HCI_UART_REGISTERED, &hu->flags))
+diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
+index fffa61ff5cb1..12df101ca942 100644
+--- a/drivers/bluetooth/hci_uart.h
++++ b/drivers/bluetooth/hci_uart.h
+@@ -68,6 +68,7 @@ struct hci_uart {
+ unsigned long hdev_flags;
+
+ struct work_struct init_ready;
++ struct work_struct write_work;
+
+ struct hci_uart_proto *proto;
+ void *priv;
+diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
+index 974321a2508d..14790304b84b 100644
+--- a/drivers/char/applicom.c
++++ b/drivers/char/applicom.c
+@@ -345,7 +345,6 @@ out:
+ free_irq(apbs[i].irq, &dummy);
+ iounmap(apbs[i].RamIO);
+ }
+- pci_disable_device(dev);
+ return ret;
+ }
+
+diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
+index 67d6738d85a0..09f4a9374cf5 100644
+--- a/drivers/extcon/extcon-max8997.c
++++ b/drivers/extcon/extcon-max8997.c
+@@ -712,7 +712,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
+ goto err_irq;
+ }
+
+- if (pdata->muic_pdata) {
++ if (pdata && pdata->muic_pdata) {
+ struct max8997_muic_platform_data *muic_pdata
+ = pdata->muic_pdata;
+
+diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
+index c4e5cdfa5d24..81d0e6e1f754 100644
+--- a/drivers/hid/hid-core.c
++++ b/drivers/hid/hid-core.c
+@@ -796,7 +796,17 @@ struct hid_report *hid_validate_values(struct hid_device *hid,
+ * ->numbered being checked, which may not always be the case when
+ * drivers go to access report values.
+ */
+- report = hid->report_enum[type].report_id_hash[id];
++ if (id == 0) {
++ /*
++ * Validating on id 0 means we should examine the first
++ * report in the list.
++ */
++ report = list_entry(
++ hid->report_enum[type].report_list.next,
++ struct hid_report, list);
++ } else {
++ report = hid->report_enum[type].report_id_hash[id];
++ }
+ if (!report) {
+ hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
+ return NULL;
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
+index 144999918022..0e93152384f0 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.c
++++ b/drivers/infiniband/ulp/isert/ib_isert.c
+@@ -572,14 +572,12 @@ isert_disconnect_work(struct work_struct *work)
+ isert_put_conn(isert_conn);
+ return;
+ }
+- if (!isert_conn->logout_posted) {
+- pr_debug("Calling rdma_disconnect for !logout_posted from"
+- " isert_disconnect_work\n");
++
++ if (isert_conn->disconnect) {
++ /* Send DREQ/DREP towards our initiator */
+ rdma_disconnect(isert_conn->conn_cm_id);
+- mutex_unlock(&isert_conn->conn_mutex);
+- iscsit_cause_connection_reinstatement(isert_conn->conn, 0);
+- goto wake_up;
+ }
++
+ mutex_unlock(&isert_conn->conn_mutex);
+
+ wake_up:
+@@ -588,10 +586,11 @@ wake_up:
+ }
+
+ static void
+-isert_disconnected_handler(struct rdma_cm_id *cma_id)
++isert_disconnected_handler(struct rdma_cm_id *cma_id, bool disconnect)
+ {
+ struct isert_conn *isert_conn = (struct isert_conn *)cma_id->context;
+
++ isert_conn->disconnect = disconnect;
+ INIT_WORK(&isert_conn->conn_logout_work, isert_disconnect_work);
+ schedule_work(&isert_conn->conn_logout_work);
+ }
+@@ -600,29 +599,28 @@ static int
+ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
+ {
+ int ret = 0;
++ bool disconnect = false;
+
+ pr_debug("isert_cma_handler: event %d status %d conn %p id %p\n",
+ event->event, event->status, cma_id->context, cma_id);
+
+ switch (event->event) {
+ case RDMA_CM_EVENT_CONNECT_REQUEST:
+- pr_debug("RDMA_CM_EVENT_CONNECT_REQUEST: >>>>>>>>>>>>>>>\n");
+ ret = isert_connect_request(cma_id, event);
+ break;
+ case RDMA_CM_EVENT_ESTABLISHED:
+- pr_debug("RDMA_CM_EVENT_ESTABLISHED >>>>>>>>>>>>>>\n");
+ isert_connected_handler(cma_id);
+ break;
+- case RDMA_CM_EVENT_DISCONNECTED:
+- pr_debug("RDMA_CM_EVENT_DISCONNECTED: >>>>>>>>>>>>>>\n");
+- isert_disconnected_handler(cma_id);
+- break;
+- case RDMA_CM_EVENT_DEVICE_REMOVAL:
+- case RDMA_CM_EVENT_ADDR_CHANGE:
++ case RDMA_CM_EVENT_ADDR_CHANGE: /* FALLTHRU */
++ case RDMA_CM_EVENT_DISCONNECTED: /* FALLTHRU */
++ case RDMA_CM_EVENT_DEVICE_REMOVAL: /* FALLTHRU */
++ disconnect = true;
++ case RDMA_CM_EVENT_TIMEWAIT_EXIT: /* FALLTHRU */
++ isert_disconnected_handler(cma_id, disconnect);
+ break;
+ case RDMA_CM_EVENT_CONNECT_ERROR:
+ default:
+- pr_err("Unknown RDMA CMA event: %d\n", event->event);
++ pr_err("Unhandled RDMA CMA event: %d\n", event->event);
+ break;
+ }
+
+@@ -1371,11 +1369,8 @@ isert_do_control_comp(struct work_struct *work)
+ break;
+ case ISTATE_SEND_LOGOUTRSP:
+ pr_debug("Calling iscsit_logout_post_handler >>>>>>>>>>>>>>\n");
+- /*
+- * Call atomic_dec(&isert_conn->post_send_buf_count)
+- * from isert_wait_conn()
+- */
+- isert_conn->logout_posted = true;
++
++ atomic_dec(&isert_conn->post_send_buf_count);
+ iscsit_logout_post_handler(cmd, cmd->conn);
+ break;
+ default:
+@@ -1483,6 +1478,8 @@ isert_cq_rx_comp_err(struct isert_conn *isert_conn)
+ isert_conn->state = ISER_CONN_DOWN;
+ mutex_unlock(&isert_conn->conn_mutex);
+
++ iscsit_cause_connection_reinstatement(isert_conn->conn, 0);
++
+ complete(&isert_conn->conn_wait_comp_err);
+ }
+
+@@ -2190,9 +2187,14 @@ accept_wait:
+ return -ENODEV;
+
+ spin_lock_bh(&np->np_thread_lock);
+- if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
++ if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) {
+ spin_unlock_bh(&np->np_thread_lock);
+- pr_debug("ISCSI_NP_THREAD_RESET for isert_accept_np\n");
++ pr_debug("np_thread_state %d for isert_accept_np\n",
++ np->np_thread_state);
++ /**
++ * No point in stalling here when np_thread
++ * is in state RESET/SHUTDOWN/EXIT - bail
++ **/
+ return -ENODEV;
+ }
+ spin_unlock_bh(&np->np_thread_lock);
+@@ -2242,15 +2244,9 @@ static void isert_wait_conn(struct iscsi_conn *conn)
+ struct isert_conn *isert_conn = conn->context;
+
+ pr_debug("isert_wait_conn: Starting \n");
+- /*
+- * Decrement post_send_buf_count for special case when called
+- * from isert_do_control_comp() -> iscsit_logout_post_handler()
+- */
+- mutex_lock(&isert_conn->conn_mutex);
+- if (isert_conn->logout_posted)
+- atomic_dec(&isert_conn->post_send_buf_count);
+
+- if (isert_conn->conn_cm_id && isert_conn->state != ISER_CONN_DOWN) {
++ mutex_lock(&isert_conn->conn_mutex);
++ if (isert_conn->conn_cm_id) {
+ pr_debug("Calling rdma_disconnect from isert_wait_conn\n");
+ rdma_disconnect(isert_conn->conn_cm_id);
+ }
+@@ -2336,6 +2332,7 @@ destroy_rx_wq:
+
+ static void __exit isert_exit(void)
+ {
++ flush_scheduled_work();
+ kmem_cache_destroy(isert_cmd_cache);
+ destroy_workqueue(isert_comp_wq);
+ destroy_workqueue(isert_rx_wq);
+diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
+index dfe4a2ebef0d..032f65abee36 100644
+--- a/drivers/infiniband/ulp/isert/ib_isert.h
++++ b/drivers/infiniband/ulp/isert/ib_isert.h
+@@ -78,7 +78,6 @@ struct isert_device;
+
+ struct isert_conn {
+ enum iser_conn_state state;
+- bool logout_posted;
+ int post_recv_buf_count;
+ atomic_t post_send_buf_count;
+ u32 responder_resources;
+@@ -106,6 +105,7 @@ struct isert_conn {
+ struct completion conn_wait;
+ struct completion conn_wait_comp_err;
+ struct kref conn_kref;
++ bool disconnect;
+ };
+
+ #define ISERT_MAX_CQ 64
+diff --git a/drivers/media/pci/ivtv/ivtv-alsa-pcm.c b/drivers/media/pci/ivtv/ivtv-alsa-pcm.c
+index e1863dbf4edc..7a9b98bc208b 100644
+--- a/drivers/media/pci/ivtv/ivtv-alsa-pcm.c
++++ b/drivers/media/pci/ivtv/ivtv-alsa-pcm.c
+@@ -159,6 +159,12 @@ static int snd_ivtv_pcm_capture_open(struct snd_pcm_substream *substream)
+
+ /* Instruct the CX2341[56] to start sending packets */
+ snd_ivtv_lock(itvsc);
++
++ if (ivtv_init_on_first_open(itv)) {
++ snd_ivtv_unlock(itvsc);
++ return -ENXIO;
++ }
++
+ s = &itv->streams[IVTV_ENC_STREAM_TYPE_PCM];
+
+ v4l2_fh_init(&item.fh, s->vdev);
+diff --git a/drivers/media/usb/stk1160/stk1160-core.c b/drivers/media/usb/stk1160/stk1160-core.c
+index 34a26e0cfe77..03504dcf3c52 100644
+--- a/drivers/media/usb/stk1160/stk1160-core.c
++++ b/drivers/media/usb/stk1160/stk1160-core.c
+@@ -67,17 +67,25 @@ int stk1160_read_reg(struct stk1160 *dev, u16 reg, u8 *value)
+ {
+ int ret;
+ int pipe = usb_rcvctrlpipe(dev->udev, 0);
++ u8 *buf;
+
+ *value = 0;
++
++ buf = kmalloc(sizeof(u8), GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
+ ret = usb_control_msg(dev->udev, pipe, 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+- 0x00, reg, value, sizeof(u8), HZ);
++ 0x00, reg, buf, sizeof(u8), HZ);
+ if (ret < 0) {
+ stk1160_err("read failed on reg 0x%x (%d)\n",
+ reg, ret);
++ kfree(buf);
+ return ret;
+ }
+
++ *value = *buf;
++ kfree(buf);
+ return 0;
+ }
+
+diff --git a/drivers/media/usb/stk1160/stk1160.h b/drivers/media/usb/stk1160/stk1160.h
+index 05b05b160e1e..abdea484c998 100644
+--- a/drivers/media/usb/stk1160/stk1160.h
++++ b/drivers/media/usb/stk1160/stk1160.h
+@@ -143,7 +143,6 @@ struct stk1160 {
+ int num_alt;
+
+ struct stk1160_isoc_ctl isoc_ctl;
+- char urb_buf[255]; /* urb control msg buffer */
+
+ /* frame properties */
+ int width; /* current frame width */
+diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
+index e1c5bf3ea112..c081812ac5c0 100644
+--- a/drivers/media/usb/uvc/uvc_video.c
++++ b/drivers/media/usb/uvc/uvc_video.c
+@@ -361,6 +361,14 @@ static int uvc_commit_video(struct uvc_streaming *stream,
+ * Clocks and timestamps
+ */
+
++static inline void uvc_video_get_ts(struct timespec *ts)
++{
++ if (uvc_clock_param == CLOCK_MONOTONIC)
++ ktime_get_ts(ts);
++ else
++ ktime_get_real_ts(ts);
++}
++
+ static void
+ uvc_video_clock_decode(struct uvc_streaming *stream, struct uvc_buffer *buf,
+ const __u8 *data, int len)
+@@ -420,7 +428,7 @@ uvc_video_clock_decode(struct uvc_streaming *stream, struct uvc_buffer *buf,
+ stream->clock.last_sof = dev_sof;
+
+ host_sof = usb_get_current_frame_number(stream->dev->udev);
+- ktime_get_ts(&ts);
++ uvc_video_get_ts(&ts);
+
+ /* The UVC specification allows device implementations that can't obtain
+ * the USB frame number to keep their own frame counters as long as they
+@@ -1010,10 +1018,7 @@ static int uvc_video_decode_start(struct uvc_streaming *stream,
+ return -ENODATA;
+ }
+
+- if (uvc_clock_param == CLOCK_MONOTONIC)
+- ktime_get_ts(&ts);
+- else
+- ktime_get_real_ts(&ts);
++ uvc_video_get_ts(&ts);
+
+ buf->buf.v4l2_buf.sequence = stream->sequence;
+ buf->buf.v4l2_buf.timestamp.tv_sec = ts.tv_sec;
+diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c
+index 6b6f0ad75090..7042f5faddd7 100644
+--- a/drivers/net/can/sja1000/peak_pci.c
++++ b/drivers/net/can/sja1000/peak_pci.c
+@@ -551,7 +551,7 @@ static int peak_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ {
+ struct sja1000_priv *priv;
+ struct peak_pci_chan *chan;
+- struct net_device *dev;
++ struct net_device *dev, *prev_dev;
+ void __iomem *cfg_base, *reg_base;
+ u16 sub_sys_id, icr;
+ int i, err, channels;
+@@ -687,11 +687,13 @@ failure_remove_channels:
+ writew(0x0, cfg_base + PITA_ICR + 2);
+
+ chan = NULL;
+- for (dev = pci_get_drvdata(pdev); dev; dev = chan->prev_dev) {
+- unregister_sja1000dev(dev);
+- free_sja1000dev(dev);
++ for (dev = pci_get_drvdata(pdev); dev; dev = prev_dev) {
+ priv = netdev_priv(dev);
+ chan = priv->priv;
++ prev_dev = chan->prev_dev;
++
++ unregister_sja1000dev(dev);
++ free_sja1000dev(dev);
+ }
+
+ /* free any PCIeC resources too */
+@@ -725,10 +727,12 @@ static void peak_pci_remove(struct pci_dev *pdev)
+
+ /* Loop over all registered devices */
+ while (1) {
++ struct net_device *prev_dev = chan->prev_dev;
++
+ dev_info(&pdev->dev, "removing device %s\n", dev->name);
+ unregister_sja1000dev(dev);
+ free_sja1000dev(dev);
+- dev = chan->prev_dev;
++ dev = prev_dev;
+
+ if (!dev) {
+ /* do that only for first channel */
+diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
+index d1a769f35f9d..b1ab3a4956a5 100644
+--- a/drivers/net/ethernet/ti/cpsw.c
++++ b/drivers/net/ethernet/ti/cpsw.c
+@@ -1547,6 +1547,10 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
+ mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
+ phyid = be32_to_cpup(parp+1);
+ mdio = of_find_device_by_node(mdio_node);
++ if (!mdio) {
++ pr_err("Missing mdio platform device\n");
++ return -EINVAL;
++ }
+ snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
+ PHY_ID_FMT, mdio->name, phyid);
+
+diff --git a/drivers/staging/tidspbridge/core/dsp-clock.c b/drivers/staging/tidspbridge/core/dsp-clock.c
+index 2f084e181d39..a1aca4416ca7 100644
+--- a/drivers/staging/tidspbridge/core/dsp-clock.c
++++ b/drivers/staging/tidspbridge/core/dsp-clock.c
+@@ -226,7 +226,7 @@ int dsp_clk_enable(enum dsp_clk_id clk_id)
+ case GPT_CLK:
+ status = omap_dm_timer_start(timer[clk_id - 1]);
+ break;
+-#ifdef CONFIG_OMAP_MCBSP
++#ifdef CONFIG_SND_OMAP_SOC_MCBSP
+ case MCBSP_CLK:
+ omap_mcbsp_request(MCBSP_ID(clk_id));
+ omap2_mcbsp_set_clks_src(MCBSP_ID(clk_id), MCBSP_CLKS_PAD_SRC);
+@@ -302,7 +302,7 @@ int dsp_clk_disable(enum dsp_clk_id clk_id)
+ case GPT_CLK:
+ status = omap_dm_timer_stop(timer[clk_id - 1]);
+ break;
+-#ifdef CONFIG_OMAP_MCBSP
++#ifdef CONFIG_SND_OMAP_SOC_MCBSP
+ case MCBSP_CLK:
+ omap2_mcbsp_set_clks_src(MCBSP_ID(clk_id), MCBSP_CLKS_PRCM_SRC);
+ omap_mcbsp_free(MCBSP_ID(clk_id));
+diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
+index 68dbd88babbd..72663ba228dc 100644
+--- a/drivers/target/iscsi/iscsi_target.c
++++ b/drivers/target/iscsi/iscsi_target.c
+@@ -4151,8 +4151,6 @@ int iscsit_close_connection(
+ if (conn->conn_transport->iscsit_wait_conn)
+ conn->conn_transport->iscsit_wait_conn(conn);
+
+- iscsit_free_queue_reqs_for_conn(conn);
+-
+ /*
+ * During Connection recovery drop unacknowledged out of order
+ * commands for this connection, and prepare the other commands
+@@ -4169,6 +4167,7 @@ int iscsit_close_connection(
+ iscsit_clear_ooo_cmdsns_for_conn(conn);
+ iscsit_release_commands_from_conn(conn);
+ }
++ iscsit_free_queue_reqs_for_conn(conn);
+
+ /*
+ * Handle decrementing session or connection usage count if
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index 0d6c3dd25679..e14e105acff8 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -597,13 +597,8 @@ static int iscsi_login_non_zero_tsih_s2(
+ *
+ * In our case, we have already located the struct iscsi_tiqn at this point.
+ */
+- memset(buf, 0, 32);
+- sprintf(buf, "TargetPortalGroupTag=%hu", ISCSI_TPG_S(sess)->tpgt);
+- if (iscsi_change_param_value(buf, conn->param_list, 0) < 0) {
+- iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+- ISCSI_LOGIN_STATUS_NO_RESOURCES);
++ if (iscsi_change_param_sprintf(conn, "TargetPortalGroupTag=%hu", sess->tpg->tpgt))
+ return -1;
+- }
+
+ return iscsi_login_disable_FIM_keys(conn->param_list, conn);
+ }
+diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
+index 0921a64b5550..5c3b6778c22a 100644
+--- a/drivers/target/target_core_rd.c
++++ b/drivers/target/target_core_rd.c
+@@ -174,7 +174,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
+ - 1;
+
+ for (j = 0; j < sg_per_table; j++) {
+- pg = alloc_pages(GFP_KERNEL, 0);
++ pg = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
+ if (!pg) {
+ pr_err("Unable to allocate scatterlist"
+ " pages for struct rd_dev_sg_table\n");
+diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
+index bbc5b0ee2bdc..0ef75fb0ecba 100644
+--- a/drivers/target/target_core_sbc.c
++++ b/drivers/target/target_core_sbc.c
+@@ -63,7 +63,7 @@ sbc_emulate_readcapacity(struct se_cmd *cmd)
+ transport_kunmap_data_sg(cmd);
+ }
+
+- target_complete_cmd(cmd, GOOD);
++ target_complete_cmd_with_length(cmd, GOOD, 8);
+ return 0;
+ }
+
+@@ -101,7 +101,7 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
+ transport_kunmap_data_sg(cmd);
+ }
+
+- target_complete_cmd(cmd, GOOD);
++ target_complete_cmd_with_length(cmd, GOOD, 32);
+ return 0;
+ }
+
+diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
+index 9fabbf7214cd..34254b2ec466 100644
+--- a/drivers/target/target_core_spc.c
++++ b/drivers/target/target_core_spc.c
+@@ -628,6 +628,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
+ unsigned char buf[SE_INQUIRY_BUF];
+ sense_reason_t ret;
+ int p;
++ int len = 0;
+
+ memset(buf, 0, SE_INQUIRY_BUF);
+
+@@ -645,6 +646,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
+ }
+
+ ret = spc_emulate_inquiry_std(cmd, buf);
++ len = buf[4] + 5;
+ goto out;
+ }
+
+@@ -652,6 +654,7 @@ spc_emulate_inquiry(struct se_cmd *cmd)
+ if (cdb[2] == evpd_handlers[p].page) {
+ buf[1] = cdb[2];
+ ret = evpd_handlers[p].emulate(cmd, buf);
++ len = get_unaligned_be16(&buf[2]) + 4;
+ goto out;
+ }
+ }
+@@ -667,7 +670,7 @@ out:
+ }
+
+ if (!ret)
+- target_complete_cmd(cmd, GOOD);
++ target_complete_cmd_with_length(cmd, GOOD, len);
+ return ret;
+ }
+
+@@ -985,7 +988,7 @@ set_length:
+ transport_kunmap_data_sg(cmd);
+ }
+
+- target_complete_cmd(cmd, GOOD);
++ target_complete_cmd_with_length(cmd, GOOD, length);
+ return 0;
+ }
+
+@@ -1162,7 +1165,7 @@ done:
+ buf[3] = (lun_count & 0xff);
+ transport_kunmap_data_sg(cmd);
+
+- target_complete_cmd(cmd, GOOD);
++ target_complete_cmd_with_length(cmd, GOOD, 8 + lun_count * 8);
+ return 0;
+ }
+ EXPORT_SYMBOL(spc_emulate_report_luns);
+diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
+index 21e315874a54..6866d86e8663 100644
+--- a/drivers/target/target_core_transport.c
++++ b/drivers/target/target_core_transport.c
+@@ -488,7 +488,7 @@ static int transport_cmd_check_stop(struct se_cmd *cmd, bool remove_from_lists)
+
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+
+- complete(&cmd->t_transport_stop_comp);
++ complete_all(&cmd->t_transport_stop_comp);
+ return 1;
+ }
+
+@@ -617,7 +617,7 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
+ if (cmd->transport_state & CMD_T_ABORTED &&
+ cmd->transport_state & CMD_T_STOP) {
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+- complete(&cmd->t_transport_stop_comp);
++ complete_all(&cmd->t_transport_stop_comp);
+ return;
+ } else if (cmd->transport_state & CMD_T_FAILED) {
+ INIT_WORK(&cmd->work, target_complete_failure_work);
+@@ -633,6 +633,23 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status)
+ }
+ EXPORT_SYMBOL(target_complete_cmd);
+
++void target_complete_cmd_with_length(struct se_cmd *cmd, u8 scsi_status, int length)
++{
++ if (scsi_status == SAM_STAT_GOOD && length < cmd->data_length) {
++ if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
++ cmd->residual_count += cmd->data_length - length;
++ } else {
++ cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
++ cmd->residual_count = cmd->data_length - length;
++ }
++
++ cmd->data_length = length;
++ }
++
++ target_complete_cmd(cmd, scsi_status);
++}
++EXPORT_SYMBOL(target_complete_cmd_with_length);
++
+ static void target_add_to_state_list(struct se_cmd *cmd)
+ {
+ struct se_device *dev = cmd->se_dev;
+@@ -1688,7 +1705,7 @@ void target_execute_cmd(struct se_cmd *cmd)
+ cmd->se_tfo->get_task_tag(cmd));
+
+ spin_unlock_irq(&cmd->t_state_lock);
+- complete(&cmd->t_transport_stop_comp);
++ complete_all(&cmd->t_transport_stop_comp);
+ return;
+ }
+
+@@ -2877,6 +2894,12 @@ static void target_tmr_work(struct work_struct *work)
+ int transport_generic_handle_tmr(
+ struct se_cmd *cmd)
+ {
++ unsigned long flags;
++
++ spin_lock_irqsave(&cmd->t_state_lock, flags);
++ cmd->transport_state |= CMD_T_ACTIVE;
++ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
++
+ INIT_WORK(&cmd->work, target_tmr_work);
+ queue_work(cmd->se_dev->tmr_wq, &cmd->work);
+ return 0;
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 69948ad39837..d868b62c1a16 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -604,6 +604,10 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
+
+ dwc3_remove_requests(dwc, dep);
+
++ /* make sure HW endpoint isn't stalled */
++ if (dep->flags & DWC3_EP_STALL)
++ __dwc3_gadget_ep_set_halt(dep, 0);
++
+ reg = dwc3_readl(dwc->regs, DWC3_DALEPENA);
+ reg &= ~DWC3_DALEPENA_EP(dep->number);
+ dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
+diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
+index 570c005062ab..42a30903d4fd 100644
+--- a/drivers/usb/gadget/inode.c
++++ b/drivers/usb/gadget/inode.c
+@@ -1509,7 +1509,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ }
+ break;
+
+-#ifndef CONFIG_USB_GADGET_PXA25X
++#ifndef CONFIG_USB_PXA25X
+ /* PXA automagically handles this request too */
+ case USB_REQ_GET_CONFIGURATION:
+ if (ctrl->bRequestType != 0x80)
+diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
+index 4c338ec03a07..9cfe3af3101a 100644
+--- a/drivers/usb/host/pci-quirks.c
++++ b/drivers/usb/host/pci-quirks.c
+@@ -555,6 +555,14 @@ static const struct dmi_system_id ehci_dmi_nohandoff_table[] = {
+ DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"),
+ },
+ },
++ {
++ /* HASEE E200 */
++ .matches = {
++ DMI_MATCH(DMI_BOARD_VENDOR, "HASEE"),
++ DMI_MATCH(DMI_BOARD_NAME, "E210"),
++ DMI_MATCH(DMI_BIOS_VERSION, "6.00"),
++ },
++ },
+ { }
+ };
+
+@@ -564,9 +572,14 @@ static void ehci_bios_handoff(struct pci_dev *pdev,
+ {
+ int try_handoff = 1, tried_handoff = 0;
+
+- /* The Pegatron Lucid tablet sporadically waits for 98 seconds trying
+- * the handoff on its unused controller. Skip it. */
+- if (pdev->vendor == 0x8086 && pdev->device == 0x283a) {
++ /*
++ * The Pegatron Lucid tablet sporadically waits for 98 seconds trying
++ * the handoff on its unused controller. Skip it.
++ *
++ * The HASEE E200 hangs when the semaphore is set (bugzilla #77021).
++ */
++ if (pdev->vendor == 0x8086 && (pdev->device == 0x283a ||
++ pdev->device == 0x27cc)) {
+ if (dmi_check_system(ehci_dmi_nohandoff_table))
+ try_handoff = 0;
+ }
+diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
+index 8b4ca1cb450a..98438b90838f 100644
+--- a/drivers/usb/misc/usbtest.c
++++ b/drivers/usb/misc/usbtest.c
+@@ -7,9 +7,10 @@
+ #include <linux/moduleparam.h>
+ #include <linux/scatterlist.h>
+ #include <linux/mutex.h>
+-
++#include <linux/timer.h>
+ #include <linux/usb.h>
+
++#define SIMPLE_IO_TIMEOUT 10000 /* in milliseconds */
+
+ /*-------------------------------------------------------------------------*/
+
+@@ -366,6 +367,7 @@ static int simple_io(
+ int max = urb->transfer_buffer_length;
+ struct completion completion;
+ int retval = 0;
++ unsigned long expire;
+
+ urb->context = &completion;
+ while (retval == 0 && iterations-- > 0) {
+@@ -378,9 +380,15 @@ static int simple_io(
+ if (retval != 0)
+ break;
+
+- /* NOTE: no timeouts; can't be broken out of by interrupt */
+- wait_for_completion(&completion);
+- retval = urb->status;
++ expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);
++ if (!wait_for_completion_timeout(&completion, expire)) {
++ usb_kill_urb(urb);
++ retval = (urb->status == -ENOENT ?
++ -ETIMEDOUT : urb->status);
++ } else {
++ retval = urb->status;
++ }
++
+ urb->dev = udev;
+ if (retval == 0 && usb_pipein(urb->pipe))
+ retval = simple_check_buf(tdev, urb);
+@@ -476,6 +484,14 @@ alloc_sglist(int nents, int max, int vary)
+ return sg;
+ }
+
++static void sg_timeout(unsigned long _req)
++{
++ struct usb_sg_request *req = (struct usb_sg_request *) _req;
++
++ req->status = -ETIMEDOUT;
++ usb_sg_cancel(req);
++}
++
+ static int perform_sglist(
+ struct usbtest_dev *tdev,
+ unsigned iterations,
+@@ -487,6 +503,9 @@ static int perform_sglist(
+ {
+ struct usb_device *udev = testdev_to_usbdev(tdev);
+ int retval = 0;
++ struct timer_list sg_timer;
++
++ setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req);
+
+ while (retval == 0 && iterations-- > 0) {
+ retval = usb_sg_init(req, udev, pipe,
+@@ -497,7 +516,10 @@ static int perform_sglist(
+
+ if (retval)
+ break;
++ mod_timer(&sg_timer, jiffies +
++ msecs_to_jiffies(SIMPLE_IO_TIMEOUT));
+ usb_sg_wait(req);
++ del_timer_sync(&sg_timer);
+ retval = req->status;
+
+ /* FIXME check resulting data pattern */
+@@ -1149,6 +1171,11 @@ static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
+ urb->context = &completion;
+ urb->complete = unlink1_callback;
+
++ if (usb_pipeout(urb->pipe)) {
++ simple_fill_buf(urb);
++ urb->transfer_flags |= URB_ZERO_PACKET;
++ }
++
+ /* keep the endpoint busy. there are lots of hc/hcd-internal
+ * states, and testing should get to all of them over time.
+ *
+@@ -1279,6 +1306,11 @@ static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
+ unlink_queued_callback, &ctx);
+ ctx.urbs[i]->transfer_dma = buf_dma;
+ ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
++
++ if (usb_pipeout(ctx.urbs[i]->pipe)) {
++ simple_fill_buf(ctx.urbs[i]);
++ ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET;
++ }
+ }
+
+ /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
+diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c
+index ae481afcb3ec..9201feb97e9e 100644
+--- a/drivers/usb/phy/phy-isp1301-omap.c
++++ b/drivers/usb/phy/phy-isp1301-omap.c
+@@ -1299,7 +1299,7 @@ isp1301_set_host(struct usb_otg *otg, struct usb_bus *host)
+ return isp1301_otg_enable(isp);
+ return 0;
+
+-#elif !defined(CONFIG_USB_GADGET_OMAP)
++#elif !IS_ENABLED(CONFIG_USB_OMAP)
+ // FIXME update its refcount
+ otg->host = host;
+
+diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
+index 3c4db6d196c6..7229b265870a 100644
+--- a/drivers/usb/serial/bus.c
++++ b/drivers/usb/serial/bus.c
+@@ -98,13 +98,19 @@ static int usb_serial_device_remove(struct device *dev)
+ struct usb_serial_port *port;
+ int retval = 0;
+ int minor;
++ int autopm_err;
+
+ port = to_usb_serial_port(dev);
+ if (!port)
+ return -ENODEV;
+
+- /* make sure suspend/resume doesn't race against port_remove */
+- usb_autopm_get_interface(port->serial->interface);
++ /*
++ * Make sure suspend/resume doesn't race against port_remove.
++ *
++ * Note that no further runtime PM callbacks will be made if
++ * autopm_get fails.
++ */
++ autopm_err = usb_autopm_get_interface(port->serial->interface);
+
+ minor = port->number;
+ tty_unregister_device(usb_serial_tty_driver, minor);
+@@ -118,7 +124,9 @@ static int usb_serial_device_remove(struct device *dev)
+ dev_info(dev, "%s converter now disconnected from ttyUSB%d\n",
+ driver->description, minor);
+
+- usb_autopm_put_interface(port->serial->interface);
++ if (!autopm_err)
++ usb_autopm_put_interface(port->serial->interface);
++
+ return retval;
+ }
+
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 948a19f0cdf7..70ede84f4f6b 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1925,6 +1925,7 @@ static int option_send_setup(struct usb_serial_port *port)
+ struct option_private *priv = intfdata->private;
+ struct usb_wwan_port_private *portdata;
+ int val = 0;
++ int res;
+
+ portdata = usb_get_serial_port_data(port);
+
+@@ -1933,9 +1934,17 @@ static int option_send_setup(struct usb_serial_port *port)
+ if (portdata->rts_state)
+ val |= 0x02;
+
+- return usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
++ res = usb_autopm_get_interface(serial->interface);
++ if (res)
++ return res;
++
++ res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ 0x22, 0x21, val, priv->bInterfaceNumber, NULL,
+ 0, USB_CTRL_SET_TIMEOUT);
++
++ usb_autopm_put_interface(serial->interface);
++
++ return res;
+ }
+
+ MODULE_AUTHOR(DRIVER_AUTHOR);
+diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
+index 6c0a542e8ec1..43d93dbf7d71 100644
+--- a/drivers/usb/serial/qcserial.c
++++ b/drivers/usb/serial/qcserial.c
+@@ -145,12 +145,33 @@ static const struct usb_device_id id_table[] = {
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 0)}, /* Sierra Wireless EM7355 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 2)}, /* Sierra Wireless EM7355 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 3)}, /* Sierra Wireless EM7355 Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9040, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9040, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9040, 3)}, /* Sierra Wireless Modem Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 0)}, /* Sierra Wireless MC7305/MC7355 Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 2)}, /* Sierra Wireless MC7305/MC7355 NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 3)}, /* Sierra Wireless MC7305/MC7355 Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 0)}, /* Netgear AirCard 340U Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 2)}, /* Netgear AirCard 340U NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 3)}, /* Netgear AirCard 340U Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9053, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9053, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9053, 3)}, /* Sierra Wireless Modem Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9054, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9054, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9054, 3)}, /* Sierra Wireless Modem Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9055, 0)}, /* Netgear AirCard 341U Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9055, 2)}, /* Netgear AirCard 341U NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9055, 3)}, /* Netgear AirCard 341U Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9056, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9056, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9056, 3)}, /* Sierra Wireless Modem Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9060, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9060, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9060, 3)}, /* Sierra Wireless Modem Modem */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9061, 0)}, /* Sierra Wireless Modem Device Management */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9061, 2)}, /* Sierra Wireless Modem NMEA */
++ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9061, 3)}, /* Sierra Wireless Modem Modem */
+ {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 0)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Device Management */
+ {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card NMEA */
+ {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 3)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Modem */
+diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
+index 2df566c0e9e8..4e4590854123 100644
+--- a/drivers/usb/serial/sierra.c
++++ b/drivers/usb/serial/sierra.c
+@@ -58,6 +58,7 @@ struct sierra_intf_private {
+ spinlock_t susp_lock;
+ unsigned int suspended:1;
+ int in_flight;
++ unsigned int open_ports;
+ };
+
+ static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
+@@ -767,6 +768,7 @@ static void sierra_close(struct usb_serial_port *port)
+ struct usb_serial *serial = port->serial;
+ struct sierra_port_private *portdata;
+ struct sierra_intf_private *intfdata = port->serial->private;
++ struct urb *urb;
+
+ portdata = usb_get_serial_port_data(port);
+
+@@ -775,7 +777,6 @@ static void sierra_close(struct usb_serial_port *port)
+
+ mutex_lock(&serial->disc_mutex);
+ if (!serial->disconnected) {
+- serial->interface->needs_remote_wakeup = 0;
+ /* odd error handling due to pm counters */
+ if (!usb_autopm_get_interface(serial->interface))
+ sierra_send_setup(port);
+@@ -786,8 +787,22 @@ static void sierra_close(struct usb_serial_port *port)
+ mutex_unlock(&serial->disc_mutex);
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 0;
++ if (--intfdata->open_ports == 0)
++ serial->interface->needs_remote_wakeup = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
+
++ for (;;) {
++ urb = usb_get_from_anchor(&portdata->delayed);
++ if (!urb)
++ break;
++ kfree(urb->transfer_buffer);
++ usb_free_urb(urb);
++ usb_autopm_put_interface_async(serial->interface);
++ spin_lock(&portdata->lock);
++ portdata->outstanding_urbs--;
++ spin_unlock(&portdata->lock);
++ }
++
+ sierra_stop_rx_urbs(port);
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+@@ -824,23 +839,29 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
+ usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
+
+ err = sierra_submit_rx_urbs(port, GFP_KERNEL);
+- if (err) {
+- /* get rid of everything as in close */
+- sierra_close(port);
+- /* restore balance for autopm */
+- if (!serial->disconnected)
+- usb_autopm_put_interface(serial->interface);
+- return err;
+- }
++ if (err)
++ goto err_submit;
++
+ sierra_send_setup(port);
+
+- serial->interface->needs_remote_wakeup = 1;
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 1;
++ if (++intfdata->open_ports == 1)
++ serial->interface->needs_remote_wakeup = 1;
+ spin_unlock_irq(&intfdata->susp_lock);
+ usb_autopm_put_interface(serial->interface);
+
+ return 0;
++
++err_submit:
++ sierra_stop_rx_urbs(port);
++
++ for (i = 0; i < portdata->num_in_urbs; i++) {
++ sierra_release_urb(portdata->in_urbs[i]);
++ portdata->in_urbs[i] = NULL;
++ }
++
++ return err;
+ }
+
+
+@@ -936,6 +957,7 @@ static int sierra_port_remove(struct usb_serial_port *port)
+ struct sierra_port_private *portdata;
+
+ portdata = usb_get_serial_port_data(port);
++ usb_set_serial_port_data(port, NULL);
+ kfree(portdata);
+
+ return 0;
+@@ -952,6 +974,8 @@ static void stop_read_write_urbs(struct usb_serial *serial)
+ for (i = 0; i < serial->num_ports; ++i) {
+ port = serial->port[i];
+ portdata = usb_get_serial_port_data(port);
++ if (!portdata)
++ continue;
+ sierra_stop_rx_urbs(port);
+ usb_kill_anchored_urbs(&portdata->active);
+ }
+@@ -994,6 +1018,9 @@ static int sierra_resume(struct usb_serial *serial)
+ port = serial->port[i];
+ portdata = usb_get_serial_port_data(port);
+
++ if (!portdata)
++ continue;
++
+ while ((urb = usb_get_from_anchor(&portdata->delayed))) {
+ usb_anchor_urb(urb, &portdata->active);
+ intfdata->in_flight++;
+@@ -1001,8 +1028,12 @@ static int sierra_resume(struct usb_serial *serial)
+ if (err < 0) {
+ intfdata->in_flight--;
+ usb_unanchor_urb(urb);
+- usb_scuttle_anchored_urbs(&portdata->delayed);
+- break;
++ kfree(urb->transfer_buffer);
++ usb_free_urb(urb);
++ spin_lock(&portdata->lock);
++ portdata->outstanding_urbs--;
++ spin_unlock(&portdata->lock);
++ continue;
+ }
+ }
+
+diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
+index 11952b6dc224..36f6b6a56907 100644
+--- a/drivers/usb/serial/usb_wwan.c
++++ b/drivers/usb/serial/usb_wwan.c
+@@ -228,8 +228,10 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
+ usb_pipeendpoint(this_urb->pipe), i);
+
+ err = usb_autopm_get_interface_async(port->serial->interface);
+- if (err < 0)
++ if (err < 0) {
++ clear_bit(i, &portdata->out_busy);
+ break;
++ }
+
+ /* send the data */
+ memcpy(this_urb->transfer_buffer, buf, todo);
+@@ -386,6 +388,14 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
+ portdata = usb_get_serial_port_data(port);
+ intfdata = serial->private;
+
++ if (port->interrupt_in_urb) {
++ err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
++ if (err) {
++ dev_dbg(&port->dev, "%s: submit int urb failed: %d\n",
++ __func__, err);
++ }
++ }
++
+ /* Start reading from the IN endpoint */
+ for (i = 0; i < N_IN_URB; i++) {
+ urb = portdata->in_urbs[i];
+@@ -412,12 +422,26 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
+ }
+ EXPORT_SYMBOL(usb_wwan_open);
+
++static void unbusy_queued_urb(struct urb *urb,
++ struct usb_wwan_port_private *portdata)
++{
++ int i;
++
++ for (i = 0; i < N_OUT_URB; i++) {
++ if (urb == portdata->out_urbs[i]) {
++ clear_bit(i, &portdata->out_busy);
++ break;
++ }
++ }
++}
++
+ void usb_wwan_close(struct usb_serial_port *port)
+ {
+ int i;
+ struct usb_serial *serial = port->serial;
+ struct usb_wwan_port_private *portdata;
+ struct usb_wwan_intf_private *intfdata = port->serial->private;
++ struct urb *urb;
+
+ portdata = usb_get_serial_port_data(port);
+
+@@ -426,10 +450,19 @@ void usb_wwan_close(struct usb_serial_port *port)
+ portdata->opened = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
+
++ for (;;) {
++ urb = usb_get_from_anchor(&portdata->delayed);
++ if (!urb)
++ break;
++ unbusy_queued_urb(urb, portdata);
++ usb_autopm_put_interface_async(serial->interface);
++ }
++
+ for (i = 0; i < N_IN_URB; i++)
+ usb_kill_urb(portdata->in_urbs[i]);
+ for (i = 0; i < N_OUT_URB; i++)
+ usb_kill_urb(portdata->out_urbs[i]);
++ usb_kill_urb(port->interrupt_in_urb);
+
+ /* balancing - important as an error cannot be handled*/
+ usb_autopm_get_interface_no_resume(serial->interface);
+@@ -467,7 +500,6 @@ int usb_wwan_port_probe(struct usb_serial_port *port)
+ struct usb_wwan_port_private *portdata;
+ struct urb *urb;
+ u8 *buffer;
+- int err;
+ int i;
+
+ if (!port->bulk_in_size || !port->bulk_out_size)
+@@ -507,13 +539,6 @@ int usb_wwan_port_probe(struct usb_serial_port *port)
+
+ usb_set_serial_port_data(port, portdata);
+
+- if (port->interrupt_in_urb) {
+- err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+- if (err)
+- dev_dbg(&port->dev, "%s: submit irq_in urb failed %d\n",
+- __func__, err);
+- }
+-
+ return 0;
+
+ bail_out_error2:
+@@ -581,44 +606,29 @@ static void stop_read_write_urbs(struct usb_serial *serial)
+ int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
+ {
+ struct usb_wwan_intf_private *intfdata = serial->private;
+- int b;
+
++ spin_lock_irq(&intfdata->susp_lock);
+ if (PMSG_IS_AUTO(message)) {
+- spin_lock_irq(&intfdata->susp_lock);
+- b = intfdata->in_flight;
+- spin_unlock_irq(&intfdata->susp_lock);
+-
+- if (b)
++ if (intfdata->in_flight) {
++ spin_unlock_irq(&intfdata->susp_lock);
+ return -EBUSY;
++ }
+ }
+-
+- spin_lock_irq(&intfdata->susp_lock);
+ intfdata->suspended = 1;
+ spin_unlock_irq(&intfdata->susp_lock);
++
+ stop_read_write_urbs(serial);
+
+ return 0;
+ }
+ EXPORT_SYMBOL(usb_wwan_suspend);
+
+-static void unbusy_queued_urb(struct urb *urb, struct usb_wwan_port_private *portdata)
+-{
+- int i;
+-
+- for (i = 0; i < N_OUT_URB; i++) {
+- if (urb == portdata->out_urbs[i]) {
+- clear_bit(i, &portdata->out_busy);
+- break;
+- }
+- }
+-}
+-
+-static void play_delayed(struct usb_serial_port *port)
++static int play_delayed(struct usb_serial_port *port)
+ {
+ struct usb_wwan_intf_private *data;
+ struct usb_wwan_port_private *portdata;
+ struct urb *urb;
+- int err;
++ int err = 0;
+
+ portdata = usb_get_serial_port_data(port);
+ data = port->serial->private;
+@@ -635,6 +645,8 @@ static void play_delayed(struct usb_serial_port *port)
+ break;
+ }
+ }
++
++ return err;
+ }
+
+ int usb_wwan_resume(struct usb_serial *serial)
+@@ -644,54 +656,51 @@ int usb_wwan_resume(struct usb_serial *serial)
+ struct usb_wwan_intf_private *intfdata = serial->private;
+ struct usb_wwan_port_private *portdata;
+ struct urb *urb;
+- int err = 0;
+-
+- /* get the interrupt URBs resubmitted unconditionally */
+- for (i = 0; i < serial->num_ports; i++) {
+- port = serial->port[i];
+- if (!port->interrupt_in_urb) {
+- dev_dbg(&port->dev, "%s: No interrupt URB for port\n", __func__);
+- continue;
+- }
+- err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
+- dev_dbg(&port->dev, "Submitted interrupt URB for port (result %d)\n", err);
+- if (err < 0) {
+- dev_err(&port->dev, "%s: Error %d for interrupt URB\n",
+- __func__, err);
+- goto err_out;
+- }
+- }
++ int err;
++ int err_count = 0;
+
++ spin_lock_irq(&intfdata->susp_lock);
+ for (i = 0; i < serial->num_ports; i++) {
+ /* walk all ports */
+ port = serial->port[i];
+ portdata = usb_get_serial_port_data(port);
+
+ /* skip closed ports */
+- spin_lock_irq(&intfdata->susp_lock);
+- if (!portdata || !portdata->opened) {
+- spin_unlock_irq(&intfdata->susp_lock);
++ if (!portdata || !portdata->opened)
+ continue;
++
++ if (port->interrupt_in_urb) {
++ err = usb_submit_urb(port->interrupt_in_urb,
++ GFP_ATOMIC);
++ if (err) {
++ dev_err(&port->dev,
++ "%s: submit int urb failed: %d\n",
++ __func__, err);
++ err_count++;
++ }
+ }
+
++ err = play_delayed(port);
++ if (err)
++ err_count++;
++
+ for (j = 0; j < N_IN_URB; j++) {
+ urb = portdata->in_urbs[j];
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ dev_err(&port->dev, "%s: Error %d for bulk URB %d\n",
+ __func__, err, i);
+- spin_unlock_irq(&intfdata->susp_lock);
+- goto err_out;
++ err_count++;
+ }
+ }
+- play_delayed(port);
+- spin_unlock_irq(&intfdata->susp_lock);
+ }
+- spin_lock_irq(&intfdata->susp_lock);
+ intfdata->suspended = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
+-err_out:
+- return err;
++
++ if (err_count)
++ return -EIO;
++
++ return 0;
+ }
+ EXPORT_SYMBOL(usb_wwan_resume);
+ #endif
+diff --git a/drivers/video/matrox/matroxfb_base.h b/drivers/video/matrox/matroxfb_base.h
+index 556d96ce40bf..89a8a89a5eb2 100644
+--- a/drivers/video/matrox/matroxfb_base.h
++++ b/drivers/video/matrox/matroxfb_base.h
+@@ -698,7 +698,7 @@ void matroxfb_unregister_driver(struct matroxfb_driver* drv);
+
+ #define mga_fifo(n) do {} while ((mga_inl(M_FIFOSTATUS) & 0xFF) < (n))
+
+-#define WaitTillIdle() do {} while (mga_inl(M_STATUS) & 0x10000)
++#define WaitTillIdle() do { mga_inl(M_STATUS); do {} while (mga_inl(M_STATUS) & 0x10000); } while (0)
+
+ /* code speedup */
+ #ifdef CONFIG_FB_MATROX_MILLENIUM
+diff --git a/fs/aio.c b/fs/aio.c
+index ebd06fd0de89..ded94c4fa30d 100644
+--- a/fs/aio.c
++++ b/fs/aio.c
+@@ -310,7 +310,6 @@ static void free_ioctx(struct kioctx *ctx)
+
+ avail = (head <= ctx->tail ? ctx->tail : ctx->nr_events) - head;
+
+- atomic_sub(avail, &ctx->reqs_active);
+ head += avail;
+ head %= ctx->nr_events;
+ }
+@@ -678,6 +677,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
+ put_rq:
+ /* everything turned out well, dispose of the aiocb. */
+ aio_put_req(iocb);
++ atomic_dec(&ctx->reqs_active);
+
+ /*
+ * We have to order our ring_info tail store above and test
+@@ -717,6 +717,8 @@ static long aio_read_events_ring(struct kioctx *ctx,
+ if (head == ctx->tail)
+ goto out;
+
++ head %= ctx->nr_events;
++
+ while (ret < nr) {
+ long avail;
+ struct io_event *ev;
+@@ -755,8 +757,6 @@ static long aio_read_events_ring(struct kioctx *ctx,
+ flush_dcache_page(ctx->ring_pages[0]);
+
+ pr_debug("%li h%u t%u\n", ret, head, ctx->tail);
+-
+- atomic_sub(ret, &ctx->reqs_active);
+ out:
+ mutex_unlock(&ctx->ring_lock);
+
+diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
+index 290e347b6db3..d85f90c92bb4 100644
+--- a/fs/btrfs/backref.c
++++ b/fs/btrfs/backref.c
+@@ -1347,9 +1347,10 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
+ * returns <0 on error
+ */
+ static int __get_extent_inline_ref(unsigned long *ptr, struct extent_buffer *eb,
+- struct btrfs_extent_item *ei, u32 item_size,
+- struct btrfs_extent_inline_ref **out_eiref,
+- int *out_type)
++ struct btrfs_key *key,
++ struct btrfs_extent_item *ei, u32 item_size,
++ struct btrfs_extent_inline_ref **out_eiref,
++ int *out_type)
+ {
+ unsigned long end;
+ u64 flags;
+@@ -1359,19 +1360,26 @@ static int __get_extent_inline_ref(unsigned long *ptr, struct extent_buffer *eb,
+ /* first call */
+ flags = btrfs_extent_flags(eb, ei);
+ if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+- info = (struct btrfs_tree_block_info *)(ei + 1);
+- *out_eiref =
+- (struct btrfs_extent_inline_ref *)(info + 1);
++ if (key->type == BTRFS_METADATA_ITEM_KEY) {
++ /* a skinny metadata extent */
++ *out_eiref =
++ (struct btrfs_extent_inline_ref *)(ei + 1);
++ } else {
++ WARN_ON(key->type != BTRFS_EXTENT_ITEM_KEY);
++ info = (struct btrfs_tree_block_info *)(ei + 1);
++ *out_eiref =
++ (struct btrfs_extent_inline_ref *)(info + 1);
++ }
+ } else {
+ *out_eiref = (struct btrfs_extent_inline_ref *)(ei + 1);
+ }
+ *ptr = (unsigned long)*out_eiref;
+- if ((void *)*ptr >= (void *)ei + item_size)
++ if ((unsigned long)(*ptr) >= (unsigned long)ei + item_size)
+ return -ENOENT;
+ }
+
+ end = (unsigned long)ei + item_size;
+- *out_eiref = (struct btrfs_extent_inline_ref *)*ptr;
++ *out_eiref = (struct btrfs_extent_inline_ref *)(*ptr);
+ *out_type = btrfs_extent_inline_ref_type(eb, *out_eiref);
+
+ *ptr += btrfs_extent_inline_ref_size(*out_type);
+@@ -1390,8 +1398,8 @@ static int __get_extent_inline_ref(unsigned long *ptr, struct extent_buffer *eb,
+ * <0 on error.
+ */
+ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
+- struct btrfs_extent_item *ei, u32 item_size,
+- u64 *out_root, u8 *out_level)
++ struct btrfs_key *key, struct btrfs_extent_item *ei,
++ u32 item_size, u64 *out_root, u8 *out_level)
+ {
+ int ret;
+ int type;
+@@ -1402,8 +1410,8 @@ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
+ return 1;
+
+ while (1) {
+- ret = __get_extent_inline_ref(ptr, eb, ei, item_size,
+- &eiref, &type);
++ ret = __get_extent_inline_ref(ptr, eb, key, ei, item_size,
++ &eiref, &type);
+ if (ret < 0)
+ return ret;
+
+diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
+index 0f446d7ca2c0..526d09e70c93 100644
+--- a/fs/btrfs/backref.h
++++ b/fs/btrfs/backref.h
+@@ -42,8 +42,8 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
+ u64 *flags);
+
+ int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
+- struct btrfs_extent_item *ei, u32 item_size,
+- u64 *out_root, u8 *out_level);
++ struct btrfs_key *key, struct btrfs_extent_item *ei,
++ u32 item_size, u64 *out_root, u8 *out_level);
+
+ int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
+ u64 extent_item_objectid,
+diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
+index 4354b9127713..abecce399354 100644
+--- a/fs/btrfs/disk-io.c
++++ b/fs/btrfs/disk-io.c
+@@ -3518,6 +3518,11 @@ int close_ctree(struct btrfs_root *root)
+
+ btrfs_free_block_groups(fs_info);
+
++ /*
++ * we must make sure there is not any read request to
++ * submit after we stopping all workers.
++ */
++ invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
+ btrfs_stop_all_workers(fs_info);
+
+ del_fs_roots(fs_info);
+diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
+index e7e7afb4a872..84ceff6abbc1 100644
+--- a/fs/btrfs/extent_io.c
++++ b/fs/btrfs/extent_io.c
+@@ -1624,6 +1624,7 @@ again:
+ * shortening the size of the delalloc range we're searching
+ */
+ free_extent_state(cached_state);
++ cached_state = NULL;
+ if (!loops) {
+ unsigned long offset = (*start) & (PAGE_CACHE_SIZE - 1);
+ max_bytes = PAGE_CACHE_SIZE - offset;
+@@ -2356,7 +2357,7 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end)
+ {
+ int uptodate = (err == 0);
+ struct extent_io_tree *tree;
+- int ret;
++ int ret = 0;
+
+ tree = &BTRFS_I(page->mapping->host)->io_tree;
+
+@@ -2370,6 +2371,8 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end)
+ if (!uptodate) {
+ ClearPageUptodate(page);
+ SetPageError(page);
++ ret = ret < 0 ? ret : -EIO;
++ mapping_set_error(page->mapping, ret);
+ }
+ return 0;
+ }
+diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
+index e53009657f0e..0cbe95dc8113 100644
+--- a/fs/btrfs/free-space-cache.c
++++ b/fs/btrfs/free-space-cache.c
+@@ -835,7 +835,7 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
+
+ if (!matched) {
+ __btrfs_remove_free_space_cache(ctl);
+- btrfs_err(fs_info, "block group %llu has wrong amount of free space",
++ btrfs_warn(fs_info, "block group %llu has wrong amount of free space",
+ block_group->key.objectid);
+ ret = -1;
+ }
+@@ -847,7 +847,7 @@ out:
+ spin_unlock(&block_group->lock);
+ ret = 0;
+
+- btrfs_err(fs_info, "failed to load free space cache for block group %llu",
++ btrfs_warn(fs_info, "failed to load free space cache for block group %llu, rebuild it now",
+ block_group->key.objectid);
+ }
+
+diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
+index eb84c2db1aca..e4f69e3b78b9 100644
+--- a/fs/btrfs/scrub.c
++++ b/fs/btrfs/scrub.c
+@@ -545,8 +545,9 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock)
+
+ if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
+ do {
+- ret = tree_backref_for_extent(&ptr, eb, ei, item_size,
+- &ref_root, &ref_level);
++ ret = tree_backref_for_extent(&ptr, eb, &found_key, ei,
++ item_size, &ref_root,
++ &ref_level);
+ printk_in_rcu(KERN_WARNING
+ "btrfs: %s at logical %llu on dev %s, "
+ "sector %llu: metadata %s (level %d) in tree "
+diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
+index 256a9a46d544..414c1b9eb896 100644
+--- a/fs/btrfs/send.c
++++ b/fs/btrfs/send.c
+@@ -1550,6 +1550,10 @@ static int lookup_dir_item_inode(struct btrfs_root *root,
+ goto out;
+ }
+ btrfs_dir_item_key_to_cpu(path->nodes[0], di, &key);
++ if (key.type == BTRFS_ROOT_ITEM_KEY) {
++ ret = -ENOENT;
++ goto out;
++ }
+ *found_inode = key.objectid;
+ *found_type = btrfs_dir_type(path->nodes[0], di);
+
+diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
+index b6c23c4abae2..7fc774639a78 100644
+--- a/fs/btrfs/volumes.c
++++ b/fs/btrfs/volumes.c
+@@ -1384,6 +1384,22 @@ out:
+ return ret;
+ }
+
++/*
++ * Function to update ctime/mtime for a given device path.
++ * Mainly used for ctime/mtime based probe like libblkid.
++ */
++static void update_dev_time(char *path_name)
++{
++ struct file *filp;
++
++ filp = filp_open(path_name, O_RDWR, 0);
++ if (!filp)
++ return;
++ file_update_time(filp);
++ filp_close(filp, NULL);
++ return;
++}
++
+ static int btrfs_rm_dev_item(struct btrfs_root *root,
+ struct btrfs_device *device)
+ {
+@@ -1612,11 +1628,12 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
+ struct btrfs_fs_devices *fs_devices;
+ fs_devices = root->fs_info->fs_devices;
+ while (fs_devices) {
+- if (fs_devices->seed == cur_devices)
++ if (fs_devices->seed == cur_devices) {
++ fs_devices->seed = cur_devices->seed;
+ break;
++ }
+ fs_devices = fs_devices->seed;
+ }
+- fs_devices->seed = cur_devices->seed;
+ cur_devices->seed = NULL;
+ lock_chunks(root);
+ __btrfs_close_devices(cur_devices);
+@@ -1642,10 +1659,14 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
+
+ ret = 0;
+
+- /* Notify udev that device has changed */
+- if (bdev)
++ if (bdev) {
++ /* Notify udev that device has changed */
+ btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
+
++ /* Update ctime/mtime for device path for libblkid */
++ update_dev_time(device_path);
++ }
++
+ error_brelse:
+ brelse(bh);
+ if (bdev)
+@@ -1817,7 +1838,6 @@ static int btrfs_prepare_sprout(struct btrfs_root *root)
+ fs_devices->seeding = 0;
+ fs_devices->num_devices = 0;
+ fs_devices->open_devices = 0;
+- fs_devices->total_devices = 0;
+ fs_devices->seed = seed_devices;
+
+ generate_random_uuid(fs_devices->fsid);
+@@ -2089,6 +2109,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
+ ret = btrfs_commit_transaction(trans, root);
+ }
+
++ /* Update ctime/mtime for libblkid */
++ update_dev_time(device_path);
+ return ret;
+
+ error_trans:
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index fba960ee26de..16bb6591561b 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -3116,7 +3116,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
+ }
+ BUG_ON(start + size <= ac->ac_o_ex.fe_logical &&
+ start > ac->ac_o_ex.fe_logical);
+- BUG_ON(size <= 0 || size > EXT4_CLUSTERS_PER_GROUP(ac->ac_sb));
++ BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
+
+ /* now prepare goal request */
+
+diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
+index 4acf1f78881b..b12a4427aedc 100644
+--- a/fs/ext4/page-io.c
++++ b/fs/ext4/page-io.c
+@@ -384,6 +384,17 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
+ ClearPageError(page);
+
+ /*
++ * Comments copied from block_write_full_page_endio:
++ *
++ * The page straddles i_size. It must be zeroed out on each and every
++ * writepage invocation because it may be mmapped. "A file is mapped
++ * in multiples of the page size. For a file that is not a multiple of
++ * the page size, the remaining memory is zeroed when mapped, and
++ * writes to that region are not written out to the file."
++ */
++ if (len < PAGE_CACHE_SIZE)
++ zero_user_segment(page, len, PAGE_CACHE_SIZE);
++ /*
+ * In the first loop we prepare and mark buffers to submit. We have to
+ * mark all buffers in the page before submitting so that
+ * end_page_writeback() cannot be called from ext4_bio_end_io() when IO
+@@ -394,19 +405,6 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
+ do {
+ block_start = bh_offset(bh);
+ if (block_start >= len) {
+- /*
+- * Comments copied from block_write_full_page_endio:
+- *
+- * The page straddles i_size. It must be zeroed out on
+- * each and every writepage invocation because it may
+- * be mmapped. "A file is mapped in multiples of the
+- * page size. For a file that is not a multiple of
+- * the page size, the remaining memory is zeroed when
+- * mapped, and writes to that region are not written
+- * out to the file."
+- */
+- zero_user_segment(page, block_start,
+- block_start + blocksize);
+ clear_buffer_dirty(bh);
+ set_buffer_uptodate(bh);
+ continue;
+diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
+index 623325e2ff97..078bc2fc74ff 100644
+--- a/include/linux/irqdesc.h
++++ b/include/linux/irqdesc.h
+@@ -27,6 +27,8 @@ struct irq_desc;
+ * @irq_count: stats field to detect stalled irqs
+ * @last_unhandled: aging timer for unhandled count
+ * @irqs_unhandled: stats field for spurious unhandled interrupts
++ * @threads_handled: stats field for deferred spurious detection of threaded handlers
++ * @threads_handled_last: comparator field for deferred spurious detection of theraded handlers
+ * @lock: locking for SMP
+ * @affinity_hint: hint to user space for preferred irq affinity
+ * @affinity_notify: context for notification of affinity changes
+@@ -52,6 +54,8 @@ struct irq_desc {
+ unsigned int irq_count; /* For detecting broken IRQs */
+ unsigned long last_unhandled; /* Aging timer for unhandled count */
+ unsigned int irqs_unhandled;
++ atomic_t threads_handled;
++ int threads_handled_last;
+ raw_spinlock_t lock;
+ struct cpumask *percpu_enabled;
+ #ifdef CONFIG_SMP
+diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
+index 89573a33ab3c..2e99b8e08770 100644
+--- a/include/linux/ptrace.h
++++ b/include/linux/ptrace.h
+@@ -5,6 +5,7 @@
+ #include <linux/sched.h> /* For struct task_struct. */
+ #include <linux/err.h> /* for IS_ERR_VALUE */
+ #include <linux/bug.h> /* For BUG_ON. */
++#include <linux/pid_namespace.h> /* For task_active_pid_ns. */
+ #include <uapi/linux/ptrace.h>
+
+ /*
+@@ -129,6 +130,37 @@ static inline void ptrace_event(int event, unsigned long message)
+ }
+
+ /**
++ * ptrace_event_pid - possibly stop for a ptrace event notification
++ * @event: %PTRACE_EVENT_* value to report
++ * @pid: process identifier for %PTRACE_GETEVENTMSG to return
++ *
++ * Check whether @event is enabled and, if so, report @event and @pid
++ * to the ptrace parent. @pid is reported as the pid_t seen from the
++ * the ptrace parent's pid namespace.
++ *
++ * Called without locks.
++ */
++static inline void ptrace_event_pid(int event, struct pid *pid)
++{
++ /*
++ * FIXME: There's a potential race if a ptracer in a different pid
++ * namespace than parent attaches between computing message below and
++ * when we acquire tasklist_lock in ptrace_stop(). If this happens,
++ * the ptracer will get a bogus pid from PTRACE_GETEVENTMSG.
++ */
++ unsigned long message = 0;
++ struct pid_namespace *ns;
++
++ rcu_read_lock();
++ ns = task_active_pid_ns(rcu_dereference(current->parent));
++ if (ns)
++ message = pid_nr_ns(pid, ns);
++ rcu_read_unlock();
++
++ ptrace_event(event, message);
++}
++
++/**
+ * ptrace_init_task - initialize ptrace state for a new child
+ * @child: new child task
+ * @ptrace: true if child should be ptrace'd by parent's tracer
+diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
+index ffa2696d64dc..a63529ab9fd7 100644
+--- a/include/target/target_core_backend.h
++++ b/include/target/target_core_backend.h
+@@ -50,6 +50,7 @@ int transport_subsystem_register(struct se_subsystem_api *);
+ void transport_subsystem_release(struct se_subsystem_api *);
+
+ void target_complete_cmd(struct se_cmd *, u8);
++void target_complete_cmd_with_length(struct se_cmd *, u8, int);
+
+ sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
+ sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
+diff --git a/kernel/fork.c b/kernel/fork.c
+index ff7be9dac4c1..270c1dab674a 100644
+--- a/kernel/fork.c
++++ b/kernel/fork.c
+@@ -1607,10 +1607,12 @@ long do_fork(unsigned long clone_flags,
+ */
+ if (!IS_ERR(p)) {
+ struct completion vfork;
++ struct pid *pid;
+
+ trace_sched_process_fork(current, p);
+
+- nr = task_pid_vnr(p);
++ pid = get_task_pid(p, PIDTYPE_PID);
++ nr = pid_vnr(pid);
+
+ if (clone_flags & CLONE_PARENT_SETTID)
+ put_user(nr, parent_tidptr);
+@@ -1625,12 +1627,14 @@ long do_fork(unsigned long clone_flags,
+
+ /* forking complete and child started to run, tell ptracer */
+ if (unlikely(trace))
+- ptrace_event(trace, nr);
++ ptrace_event_pid(trace, pid);
+
+ if (clone_flags & CLONE_VFORK) {
+ if (!wait_for_vfork_done(p, &vfork))
+- ptrace_event(PTRACE_EVENT_VFORK_DONE, nr);
++ ptrace_event_pid(PTRACE_EVENT_VFORK_DONE, pid);
+ }
++
++ put_pid(pid);
+ } else {
+ nr = PTR_ERR(p);
+ }
+diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
+index 8815abfdf2cb..a79d267b64ec 100644
+--- a/kernel/irq/manage.c
++++ b/kernel/irq/manage.c
+@@ -861,8 +861,8 @@ static int irq_thread(void *data)
+ irq_thread_check_affinity(desc, action);
+
+ action_ret = handler_fn(desc, action);
+- if (!noirqdebug)
+- note_interrupt(action->irq, desc, action_ret);
++ if (action_ret == IRQ_HANDLED)
++ atomic_inc(&desc->threads_handled);
+
+ wake_threads_waitq(desc);
+ }
+diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
+index 7b5f012bde9d..febcee3c2aa9 100644
+--- a/kernel/irq/spurious.c
++++ b/kernel/irq/spurious.c
+@@ -265,21 +265,119 @@ try_misrouted_irq(unsigned int irq, struct irq_desc *desc,
+ return action && (action->flags & IRQF_IRQPOLL);
+ }
+
++#define SPURIOUS_DEFERRED 0x80000000
++
+ void note_interrupt(unsigned int irq, struct irq_desc *desc,
+ irqreturn_t action_ret)
+ {
+ if (desc->istate & IRQS_POLL_INPROGRESS)
+ return;
+
+- /* we get here again via the threaded handler */
+- if (action_ret == IRQ_WAKE_THREAD)
+- return;
+-
+ if (bad_action_ret(action_ret)) {
+ report_bad_irq(irq, desc, action_ret);
+ return;
+ }
+
++ /*
++ * We cannot call note_interrupt from the threaded handler
++ * because we need to look at the compound of all handlers
++ * (primary and threaded). Aside of that in the threaded
++ * shared case we have no serialization against an incoming
++ * hardware interrupt while we are dealing with a threaded
++ * result.
++ *
++ * So in case a thread is woken, we just note the fact and
++ * defer the analysis to the next hardware interrupt.
++ *
++ * The threaded handlers store whether they sucessfully
++ * handled an interrupt and we check whether that number
++ * changed versus the last invocation.
++ *
++ * We could handle all interrupts with the delayed by one
++ * mechanism, but for the non forced threaded case we'd just
++ * add pointless overhead to the straight hardirq interrupts
++ * for the sake of a few lines less code.
++ */
++ if (action_ret & IRQ_WAKE_THREAD) {
++ /*
++ * There is a thread woken. Check whether one of the
++ * shared primary handlers returned IRQ_HANDLED. If
++ * not we defer the spurious detection to the next
++ * interrupt.
++ */
++ if (action_ret == IRQ_WAKE_THREAD) {
++ int handled;
++ /*
++ * We use bit 31 of thread_handled_last to
++ * denote the deferred spurious detection
++ * active. No locking necessary as
++ * thread_handled_last is only accessed here
++ * and we have the guarantee that hard
++ * interrupts are not reentrant.
++ */
++ if (!(desc->threads_handled_last & SPURIOUS_DEFERRED)) {
++ desc->threads_handled_last |= SPURIOUS_DEFERRED;
++ return;
++ }
++ /*
++ * Check whether one of the threaded handlers
++ * returned IRQ_HANDLED since the last
++ * interrupt happened.
++ *
++ * For simplicity we just set bit 31, as it is
++ * set in threads_handled_last as well. So we
++ * avoid extra masking. And we really do not
++ * care about the high bits of the handled
++ * count. We just care about the count being
++ * different than the one we saw before.
++ */
++ handled = atomic_read(&desc->threads_handled);
++ handled |= SPURIOUS_DEFERRED;
++ if (handled != desc->threads_handled_last) {
++ action_ret = IRQ_HANDLED;
++ /*
++ * Note: We keep the SPURIOUS_DEFERRED
++ * bit set. We are handling the
++ * previous invocation right now.
++ * Keep it for the current one, so the
++ * next hardware interrupt will
++ * account for it.
++ */
++ desc->threads_handled_last = handled;
++ } else {
++ /*
++ * None of the threaded handlers felt
++ * responsible for the last interrupt
++ *
++ * We keep the SPURIOUS_DEFERRED bit
++ * set in threads_handled_last as we
++ * need to account for the current
++ * interrupt as well.
++ */
++ action_ret = IRQ_NONE;
++ }
++ } else {
++ /*
++ * One of the primary handlers returned
++ * IRQ_HANDLED. So we don't care about the
++ * threaded handlers on the same line. Clear
++ * the deferred detection bit.
++ *
++ * In theory we could/should check whether the
++ * deferred bit is set and take the result of
++ * the previous run into account here as
++ * well. But it's really not worth the
++ * trouble. If every other interrupt is
++ * handled we never trigger the spurious
++ * detector. And if this is just the one out
++ * of 100k unhandled ones which is handled
++ * then we merily delay the spurious detection
++ * by one hard interrupt. Not a real problem.
++ */
++ desc->threads_handled_last &= ~SPURIOUS_DEFERRED;
++ }
++ }
++
+ if (unlikely(action_ret == IRQ_NONE)) {
+ /*
+ * If we are seeing only the odd spurious IRQ caused by
+diff --git a/lib/idr.c b/lib/idr.c
+index cca4b9302a71..a3bfde8ad60e 100644
+--- a/lib/idr.c
++++ b/lib/idr.c
+@@ -250,7 +250,7 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa,
+ id = (id | ((1 << (IDR_BITS * l)) - 1)) + 1;
+
+ /* if already at the top layer, we need to grow */
+- if (id >= 1 << (idp->layers * IDR_BITS)) {
++ if (id > idr_max(idp->layers)) {
+ *starting_id = id;
+ return -EAGAIN;
+ }
+@@ -829,12 +829,10 @@ void *idr_replace(struct idr *idp, void *ptr, int id)
+ if (!p)
+ return ERR_PTR(-EINVAL);
+
+- n = (p->layer+1) * IDR_BITS;
+-
+- if (id >= (1 << n))
++ if (id > idr_max(p->layer + 1))
+ return ERR_PTR(-EINVAL);
+
+- n -= IDR_BITS;
++ n = p->layer * IDR_BITS;
+ while ((n > 0) && p) {
+ p = p->ary[(id >> n) & IDR_MASK];
+ n -= IDR_BITS;
+diff --git a/mm/memory-failure.c b/mm/memory-failure.c
+index 4f8548abd6ee..603f1fa1b7a3 100644
+--- a/mm/memory-failure.c
++++ b/mm/memory-failure.c
+@@ -208,9 +208,9 @@ static int kill_proc(struct task_struct *t, unsigned long addr, int trapno,
+ #endif
+ si.si_addr_lsb = compound_trans_order(compound_head(page)) + PAGE_SHIFT;
+
+- if ((flags & MF_ACTION_REQUIRED) && t == current) {
++ if ((flags & MF_ACTION_REQUIRED) && t->mm == current->mm) {
+ si.si_code = BUS_MCEERR_AR;
+- ret = force_sig_info(SIGBUS, &si, t);
++ ret = force_sig_info(SIGBUS, &si, current);
+ } else {
+ /*
+ * Don't use force here, it's convenient if the signal
+@@ -382,10 +382,12 @@ static void kill_procs(struct list_head *to_kill, int forcekill, int trapno,
+ }
+ }
+
+-static int task_early_kill(struct task_struct *tsk)
++static int task_early_kill(struct task_struct *tsk, int force_early)
+ {
+ if (!tsk->mm)
+ return 0;
++ if (force_early)
++ return 1;
+ if (tsk->flags & PF_MCE_PROCESS)
+ return !!(tsk->flags & PF_MCE_EARLY);
+ return sysctl_memory_failure_early_kill;
+@@ -395,7 +397,7 @@ static int task_early_kill(struct task_struct *tsk)
+ * Collect processes when the error hit an anonymous page.
+ */
+ static void collect_procs_anon(struct page *page, struct list_head *to_kill,
+- struct to_kill **tkc)
++ struct to_kill **tkc, int force_early)
+ {
+ struct vm_area_struct *vma;
+ struct task_struct *tsk;
+@@ -411,7 +413,7 @@ static void collect_procs_anon(struct page *page, struct list_head *to_kill,
+ for_each_process (tsk) {
+ struct anon_vma_chain *vmac;
+
+- if (!task_early_kill(tsk))
++ if (!task_early_kill(tsk, force_early))
+ continue;
+ anon_vma_interval_tree_foreach(vmac, &av->rb_root,
+ pgoff, pgoff) {
+@@ -430,7 +432,7 @@ static void collect_procs_anon(struct page *page, struct list_head *to_kill,
+ * Collect processes when the error hit a file mapped page.
+ */
+ static void collect_procs_file(struct page *page, struct list_head *to_kill,
+- struct to_kill **tkc)
++ struct to_kill **tkc, int force_early)
+ {
+ struct vm_area_struct *vma;
+ struct task_struct *tsk;
+@@ -441,7 +443,7 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill,
+ for_each_process(tsk) {
+ pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
+
+- if (!task_early_kill(tsk))
++ if (!task_early_kill(tsk, force_early))
+ continue;
+
+ vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff,
+@@ -467,7 +469,8 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill,
+ * First preallocate one tokill structure outside the spin locks,
+ * so that we can kill at least one process reasonably reliable.
+ */
+-static void collect_procs(struct page *page, struct list_head *tokill)
++static void collect_procs(struct page *page, struct list_head *tokill,
++ int force_early)
+ {
+ struct to_kill *tk;
+
+@@ -478,9 +481,9 @@ static void collect_procs(struct page *page, struct list_head *tokill)
+ if (!tk)
+ return;
+ if (PageAnon(page))
+- collect_procs_anon(page, tokill, &tk);
++ collect_procs_anon(page, tokill, &tk, force_early);
+ else
+- collect_procs_file(page, tokill, &tk);
++ collect_procs_file(page, tokill, &tk, force_early);
+ kfree(tk);
+ }
+
+@@ -965,7 +968,7 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn,
+ * there's nothing that can be done.
+ */
+ if (kill)
+- collect_procs(ppage, &tokill);
++ collect_procs(ppage, &tokill, flags & MF_ACTION_REQUIRED);
+
+ ret = try_to_unmap(ppage, ttu);
+ if (ret != SWAP_SUCCESS)
+diff --git a/mm/rmap.c b/mm/rmap.c
+index b730a4409be6..705bfc8e6fcd 100644
+--- a/mm/rmap.c
++++ b/mm/rmap.c
+@@ -103,6 +103,7 @@ static inline void anon_vma_free(struct anon_vma *anon_vma)
+ * LOCK should suffice since the actual taking of the lock must
+ * happen _before_ what follows.
+ */
++ might_sleep();
+ if (rwsem_is_locked(&anon_vma->root->rwsem)) {
+ anon_vma_lock_write(anon_vma);
+ anon_vma_unlock_write(anon_vma);
+@@ -426,8 +427,9 @@ struct anon_vma *page_get_anon_vma(struct page *page)
+ * above cannot corrupt).
+ */
+ if (!page_mapped(page)) {
++ rcu_read_unlock();
+ put_anon_vma(anon_vma);
+- anon_vma = NULL;
++ return NULL;
+ }
+ out:
+ rcu_read_unlock();
+@@ -477,9 +479,9 @@ struct anon_vma *page_lock_anon_vma_read(struct page *page)
+ }
+
+ if (!page_mapped(page)) {
++ rcu_read_unlock();
+ put_anon_vma(anon_vma);
+- anon_vma = NULL;
+- goto out;
++ return NULL;
+ }
+
+ /* we pinned the anon_vma, its safe to sleep */
+diff --git a/mm/vmscan.c b/mm/vmscan.c
+index 43ddef3cf44f..4e89500391dc 100644
+--- a/mm/vmscan.c
++++ b/mm/vmscan.c
+@@ -2286,10 +2286,17 @@ static bool pfmemalloc_watermark_ok(pg_data_t *pgdat)
+
+ for (i = 0; i <= ZONE_NORMAL; i++) {
+ zone = &pgdat->node_zones[i];
++ if (!populated_zone(zone))
++ continue;
++
+ pfmemalloc_reserve += min_wmark_pages(zone);
+ free_pages += zone_page_state(zone, NR_FREE_PAGES);
+ }
+
++ /* If there are no reserves (unexpected config) then do not throttle */
++ if (!pfmemalloc_reserve)
++ return true;
++
+ wmark_ok = free_pages > pfmemalloc_reserve / 2;
+
+ /* kswapd must be awake if processes are being throttled */
+@@ -2314,9 +2321,9 @@ static bool pfmemalloc_watermark_ok(pg_data_t *pgdat)
+ static bool throttle_direct_reclaim(gfp_t gfp_mask, struct zonelist *zonelist,
+ nodemask_t *nodemask)
+ {
++ struct zoneref *z;
+ struct zone *zone;
+- int high_zoneidx = gfp_zone(gfp_mask);
+- pg_data_t *pgdat;
++ pg_data_t *pgdat = NULL;
+
+ /*
+ * Kernel threads should not be throttled as they may be indirectly
+@@ -2335,10 +2342,34 @@ static bool throttle_direct_reclaim(gfp_t gfp_mask, struct zonelist *zonelist,
+ if (fatal_signal_pending(current))
+ goto out;
+
+- /* Check if the pfmemalloc reserves are ok */
+- first_zones_zonelist(zonelist, high_zoneidx, NULL, &zone);
+- pgdat = zone->zone_pgdat;
+- if (pfmemalloc_watermark_ok(pgdat))
++ /*
++ * Check if the pfmemalloc reserves are ok by finding the first node
++ * with a usable ZONE_NORMAL or lower zone. The expectation is that
++ * GFP_KERNEL will be required for allocating network buffers when
++ * swapping over the network so ZONE_HIGHMEM is unusable.
++ *
++ * Throttling is based on the first usable node and throttled processes
++ * wait on a queue until kswapd makes progress and wakes them. There
++ * is an affinity then between processes waking up and where reclaim
++ * progress has been made assuming the process wakes on the same node.
++ * More importantly, processes running on remote nodes will not compete
++ * for remote pfmemalloc reserves and processes on different nodes
++ * should make reasonable progress.
++ */
++ for_each_zone_zonelist_nodemask(zone, z, zonelist,
++ gfp_mask, nodemask) {
++ if (zone_idx(zone) > ZONE_NORMAL)
++ continue;
++
++ /* Throttle based on the first usable node */
++ pgdat = zone->zone_pgdat;
++ if (pfmemalloc_watermark_ok(pgdat))
++ goto out;
++ break;
++ }
++
++ /* If no zone was usable by the allocation flags then do not throttle */
++ if (!pgdat)
+ goto out;
+
+ /* Account for the throttling */
+@@ -3059,7 +3090,10 @@ static int kswapd(void *p)
+ }
+ }
+
++ tsk->flags &= ~(PF_MEMALLOC | PF_SWAPWRITE | PF_KSWAPD);
+ current->reclaim_state = NULL;
++ lockdep_clear_current_reclaim_state();
++
+ return 0;
+ }
+
+diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
+index 36fed40c162c..302d29b3744d 100644
+--- a/net/bluetooth/l2cap_sock.c
++++ b/net/bluetooth/l2cap_sock.c
+@@ -949,13 +949,16 @@ static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan)
+ /* Check for backlog size */
+ if (sk_acceptq_is_full(parent)) {
+ BT_DBG("backlog full %d", parent->sk_ack_backlog);
++ release_sock(parent);
+ return NULL;
+ }
+
+ sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP,
+ GFP_ATOMIC);
+- if (!sk)
++ if (!sk) {
++ release_sock(parent);
+ return NULL;
++ }
+
+ bt_sock_reclassify_lock(sk, BTPROTO_L2CAP);
+
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 66f722b5052a..9f84a5f7404d 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -2844,6 +2844,8 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
+ skb_shinfo(nskb)->tx_flags = skb_shinfo(skb)->tx_flags & SKBTX_SHARED_FRAG;
+
+ while (pos < offset + len && i < nfrags) {
++ if (unlikely(skb_orphan_frags(skb, GFP_ATOMIC)))
++ goto err;
+ *frag = skb_shinfo(skb)->frags[i];
+ __skb_frag_ref(frag);
+ size = skb_frag_size(frag);
+diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
+index 276aa86f366b..215e9b008db6 100644
+--- a/net/iucv/af_iucv.c
++++ b/net/iucv/af_iucv.c
+@@ -1829,7 +1829,7 @@ static void iucv_callback_txdone(struct iucv_path *path,
+ spin_lock_irqsave(&list->lock, flags);
+
+ while (list_skb != (struct sk_buff *)list) {
+- if (msg->tag != IUCV_SKB_CB(list_skb)->tag) {
++ if (msg->tag == IUCV_SKB_CB(list_skb)->tag) {
+ this = list_skb;
+ break;
+ }
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