Commit Graph

633580 Commits

Author SHA1 Message Date
Corey Minyard
1abf71eef3 Move platform device creation earlier in the initialization
Some logs are printed out early using smi->dev, but on a platform device
that is not created until later.  So move the creation of that device
structure earlier in the sequence so it can be used for printing.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
2016-11-24 18:09:39 -06:00
Corey Minyard
c11daf6a8f ipmi: Update documentation
The documentation has some information that was old and needed
some things added that are new.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
2016-11-07 12:16:06 -06:00
Corey Minyard
56189b5f2f ipmi_ssif: Remove an unused module parameter
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2016-11-07 12:16:06 -06:00
Corey Minyard
5ac7b2fccd ipmi: Periodically check for events, not messages
Commit d9b7e4f717 ("ipmi: Periodically check to see if irqs and
messages are set right") to verify the contents of global events.
However, the wrong function was being called in some cases, checking
for messages, not events.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Jason DiPietro <J.DiPietro@F5.com>
2016-11-07 12:15:27 -06:00
Linus Torvalds
9c953d639c Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "A set of fixes for this series, most notably the fix for the blk-mq
  software queue regression in from this merge window.

  Apart from that, a fix for an unlikely hang if a queue is flooded with
  FUA requests from Ming, and a few small fixes for nbd and badblocks.
  Lastly, a rename update for the proc softirq output, since the block
  polling code was made generic"

* 'for-linus' of git://git.kernel.dk/linux-block:
  blk-mq: update hardware and software queues for sleeping alloc
  block: flush: fix IO hang in case of flood fua req
  nbd: fix incorrect unlock of nbd->sock_lock in sock_shutdown
  badblocks: badblocks_set/clear update unacked_exist
  softirq: Display IRQ_POLL for irq-poll statistics
2016-10-27 10:05:31 -07:00
Linus Torvalds
9dcb8b685f mm: remove per-zone hashtable of bitlock waitqueues
The per-zone waitqueues exist because of a scalability issue with the
page waitqueues on some NUMA machines, but it turns out that they hurt
normal loads, and now with the vmalloced stacks they also end up
breaking gfs2 that uses a bit_wait on a stack object:

     wait_on_bit(&gh->gh_iflags, HIF_WAIT, TASK_UNINTERRUPTIBLE)

where 'gh' can be a reference to the local variable 'mount_gh' on the
stack of fill_super().

The reason the per-zone hash table breaks for this case is that there is
no "zone" for virtual allocations, and trying to look up the physical
page to get at it will fail (with a BUG_ON()).

It turns out that I actually complained to the mm people about the
per-zone hash table for another reason just a month ago: the zone lookup
also hurts the regular use of "unlock_page()" a lot, because the zone
lookup ends up forcing several unnecessary cache misses and generates
horrible code.

As part of that earlier discussion, we had a much better solution for
the NUMA scalability issue - by just making the page lock have a
separate contention bit, the waitqueue doesn't even have to be looked at
for the normal case.

Peter Zijlstra already has a patch for that, but let's see if anybody
even notices.  In the meantime, let's fix the actual gfs2 breakage by
simplifying the bitlock waitqueues and removing the per-zone issue.

Reported-by: Andreas Gruenbacher <agruenba@redhat.com>
Tested-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-27 09:27:57 -07:00
Jens Axboe
7fe311302f blk-mq: update hardware and software queues for sleeping alloc
If we end up sleeping due to running out of requests, we should
update the hardware and software queues in the map ctx structure.
Otherwise we could end up having rq->mq_ctx point to the pre-sleep
context, and risk corrupting ctx->rq_list since we'll be
grabbing the wrong lock when inserting the request.

Reported-by: Dave Jones <davej@codemonkey.org.uk>
Reported-by: Chris Mason <clm@fb.com>
Tested-by: Chris Mason <clm@fb.com>
Fixes: 63581af3f3 ("blk-mq: remove non-blocking pass in blk_mq_map_request")
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-10-27 09:56:03 -06:00
Ming Lei
94d7dea448 block: flush: fix IO hang in case of flood fua req
This patch fixes one issue reported by Kent, which can
be triggered in bcachefs over sata disk. Actually it
is a generic issue in block flush vs. blk-tag.

Cc: Christoph Hellwig <hch@infradead.org>
Reported-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-10-26 07:49:27 -06:00
Linus Torvalds
9fe68cad6e Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
 "This fixes a regression caused by the stack vmalloc change"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  hwrng: core - Don't use a stack buffer in add_early_randomness()
2016-10-24 21:34:13 -07:00
Linus Torvalds
b5cd891716 This is the first batch of clk driver fixes for this release. We have a handful
of fixes for the uniphier clk driver that was introduced recently, as well as
 Kconfig option hiding, module autoloading markings, and a few fixes for clk_hw
 based registration patches that went in this merge window.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "This is the first batch of clk driver fixes for this release.

  We have a handful of fixes for the uniphier clk driver that was
  introduced recently, as well as Kconfig option hiding, module
  autoloading markings, and a few fixes for clk_hw based registration
  patches that went in this merge window"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: at91: Fix a return value in case of error
  clk: uniphier: rename MIO clock to SD clock for Pro5, PXs2, LD20 SoCs
  clk: uniphier: fix memory overrun bug
  clk: hi6220: use CLK_OF_DECLARE_DRIVER for sysctrl and mediactrl clock init
  clk: mvebu: armada-37xx-periph: Fix the clock gate flag
  clk: bcm2835: Clamp the PLL's requested rate to the hardware limits.
  clk: max77686: fix number of clocks setup for clk_hw based registration
  clk: mvebu: armada-37xx-periph: Fix the clock provider registration
  clk: core: add __init decoration for CLK_OF_DECLARE_DRIVER function
  clk: mediatek: Add hardware dependency
  clk: samsung: clk-exynos-audss: Fix module autoload
  clk: uniphier: fix type of variable passed to regmap_read()
  clk: uniphier: add system clock support for sLD3 SoC
2016-10-24 21:30:19 -07:00
Linus Torvalds
1ce5bdb831 Here is a set of GPIO fixes for the v4.9 kernel series:
- Fix up off-by one and line offset validation, info leak to
   userspace, and reject invalid flags. Those are especially
   valuable hardening patches from Lars-Peter Clausen, all tagged
   for stable.
 
 - Fix module autoload for TS4800 and ATH79.
 
 - Correct the IRQ handler for MPC8xxx to use handle_level_irq()
   as it (A) reacts to edges not levels and (B) even implements
   .irq_ack(). We were missing IRQs here.
 
 - Fix the error path for acpi_dev_gpio_irq_get()
 
 - Fix a memory leak in the MXS driver.
 
 - Fix an annoying typo in the STMPE driver.
 
 - Put a dependency on sysfs to the mockup driver.
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Merge tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Here is a set of GPIO fixes for the v4.9 kernel series:

   - Fix up off-by one and line offset validation, info leak to
     userspace, and reject invalid flags. Those are especially valuable
     hardening patches from Lars-Peter Clausen, all tagged for stable.

   - Fix module autoload for TS4800 and ATH79.

   - Correct the IRQ handler for MPC8xxx to use handle_level_irq() as it
     (a) reacts to edges not levels and (b) even implements .irq_ack().
     We were missing IRQs here.

   - Fix the error path for acpi_dev_gpio_irq_get()

   - Fix a memory leak in the MXS driver.

   - Fix an annoying typo in the STMPE driver.

   - Put a dependency on sysfs to the mockup driver"

* tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: mpc8xxx: Correct irq handler function
  gpio: ath79: Fix module autoload
  gpio: ts4800: Fix module autoload
  gpio: GPIO_GET_LINEEVENT_IOCTL: Reject invalid line and event flags
  gpio: GPIO_GET_LINEHANDLE_IOCTL: Reject invalid line flags
  gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
  gpio: GPIO_GET_LINEEVENT_IOCTL: Validate line offset
  gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
  gpio: GPIO_GET_LINEHANDLE_IOCTL: Validate line offset
  gpio: GPIO_GET_CHIPINFO_IOCTL: Fix information leak
  gpio: GPIO_GET_CHIPINFO_IOCTL: Fix line offset validation
  gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get()
  gpio: mockup: add sysfs dependency
  gpio: stmpe: || vs && typo
  gpio: mxs: Unmap region obtained by of_iomap
  gpio/board.txt: point to gpiod_set_value
2016-10-24 21:19:07 -07:00
Linus Torvalds
aa34e07e45 xen: fixes for 4.9-rc2
- Advertise control feature flags in xenstore.
 - Fix x86 build when XEN_PVHVM is disabled.
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Merge tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from David Vrabel:

 - advertise control feature flags in xenstore

 - fix x86 build when XEN_PVHVM is disabled

* tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xenbus: check return value of xenbus_scanf()
  xenbus: prefer list_for_each()
  x86: xen: move cpu_up functions out of ifdef
  xenbus: advertise control feature flags
2016-10-24 19:52:24 -07:00
Lorenzo Stoakes
0d73175982 mm: unexport __get_user_pages()
This patch unexports the low-level __get_user_pages() function.

Recent refactoring of the get_user_pages* functions allow flags to be
passed through get_user_pages() which eliminates the need for access to
this function from its one user, kvm.

We can see that the two calls to get_user_pages() which replace
__get_user_pages() in kvm_main.c are equivalent by examining their call
stacks:

  get_user_page_nowait():
    get_user_pages(start, 1, flags, page, NULL)
    __get_user_pages_locked(current, current->mm, start, 1, page, NULL, NULL,
			    false, flags | FOLL_TOUCH)
    __get_user_pages(current, current->mm, start, 1,
		     flags | FOLL_TOUCH | FOLL_GET, page, NULL, NULL)

  check_user_page_hwpoison():
    get_user_pages(addr, 1, flags, NULL, NULL)
    __get_user_pages_locked(current, current->mm, addr, 1, NULL, NULL, NULL,
			    false, flags | FOLL_TOUCH)
    __get_user_pages(current, current->mm, addr, 1, flags | FOLL_TOUCH, NULL,
		     NULL, NULL)

Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-24 19:13:20 -07:00
Linus Torvalds
272ddc8b37 proc: don't use FOLL_FORCE for reading cmdline and environment
Now that Lorenzo cleaned things up and made the FOLL_FORCE users
explicit, it becomes obvious how some of them don't really need
FOLL_FORCE at all.

So remove FOLL_FORCE from the proc code that reads the command line and
arguments from user space.

The mem_rw() function actually does want FOLL_FORCE, because gdd (and
possibly many other debuggers) use it as a much more convenient version
of PTRACE_PEEKDATA, but we should consider making the FOLL_FORCE part
conditional on actually being a ptracer.  This does not actually do
that, just moves adds a comment to that effect and moves the gup_flags
settings next to each other.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-24 19:00:44 -07:00
John W. Linville
423221d174 nbd: fix incorrect unlock of nbd->sock_lock in sock_shutdown
Commit 0eadf37afc ("nbd: allow block mq to deal with timeouts")
changed normal usage of nbd->sock_lock to use spin_lock/spin_unlock
rather than the *_irq variants, but it missed this unlock in an
error path.

Found by Coverity, CID 1373871.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Fixes: 0eadf37afc ("nbd: allow block mq to deal with timeouts")
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-10-24 13:18:14 -06:00
Jan Beulich
c251f15c7d xenbus: check return value of xenbus_scanf()
Don't ignore errors here: Set backend state to unknown when
unsuccessful.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-24 16:08:21 +01:00
Jan Beulich
e1e5b3ff41 xenbus: prefer list_for_each()
This is more efficient than list_for_each_safe() when list modification
is accompanied by breaking out of the loop.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-24 16:08:04 +01:00
Arnd Bergmann
cb5f7e7c1d x86: xen: move cpu_up functions out of ifdef
Three newly introduced functions are not defined when CONFIG_XEN_PVHVM is
disabled, but are still being used:

arch/x86/xen/enlighten.c:141:12: warning: ‘xen_cpu_up_prepare’ used but never defined
arch/x86/xen/enlighten.c:142:12: warning: ‘xen_cpu_up_online’ used but never defined
arch/x86/xen/enlighten.c:143:12: warning: ‘xen_cpu_dead’ used but never defined

Fixes: 4d737042d6 ("xen/x86: Convert to hotplug state machine")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-24 15:49:07 +01:00
Juergen Gross
44b3c7af02 xenbus: advertise control feature flags
The Xen docs specify several flags which a guest can set to advertise
which values of the xenstore control/shutdown key it will recognize.
This patch adds code to write all the relevant feature-flag keys.

Based-on-patch-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-24 15:48:40 +01:00
Liu Gang
d71cf15b86 gpio: mpc8xxx: Correct irq handler function
From the beginning of the gpio-mpc8xxx.c, the "handle_level_irq"
has being used to handle GPIO interrupts in the PowerPC/Layerscape
platforms. But actually, almost all PowerPC/Layerscape platforms
assert an interrupt request upon either a high-to-low change or
any change on the state of the signal.

So the "handle_level_irq" is not reasonable for PowerPC/Layerscape
GPIO interrupt, it should be "handle_edge_irq". Otherwise the system
may lost some interrupts from the PIN's state changes.

Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-24 02:20:40 +02:00
Linus Torvalds
07d9a38068 Linux 4.9-rc2 2016-10-23 17:10:14 -07:00
Linus Torvalds
5ff93abc7a This pull requests contains fixes for issues in both UBI and UBIFS:
- Fallout from the merge window, refactoring UBI code introduced some issues.
 - Fixes for an UBIFS readdir bug which can cause getdents() to busy loop
   for ever and a bug in the UBIFS xattr code.
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Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs

Pull UBI[FS] fixes from Richard Weinberger:
 "This contains fixes for issues in both UBI and UBIFS:

   - Fallout from the merge window, refactoring UBI code introduced some
     issues.

   - Fixes for an UBIFS readdir bug which can cause getdents() to busy
     loop for ever and a bug in the UBIFS xattr code"

* tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs:
  ubifs: Abort readdir upon error
  UBI: Fix crash in try_recover_peb()
  ubi: fix swapped arguments to call to ubi_alloc_aeb
  ubifs: Fix xattr_names length in exit paths
  ubifs: Rename ubifs_rename2
2016-10-23 16:58:55 -07:00
Linus Torvalds
c761923cb8 A few bug fixes and add some missing KERN_CONT annotations
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "A few bug fixes and add some missing KERN_CONT annotations"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: add missing KERN_CONT to a few more debugging uses
  fscrypto: lock inode while setting encryption policy
  ext4: correct endianness conversion in __xattr_check_inode()
  fscrypto: make XTS tweak initialization endian-independent
  ext4: do not advertise encryption support when disabled
  jbd2: fix incorrect unlock on j_list_lock
  ext4: super.c: Update logging style using KERN_CONT
2016-10-23 16:52:19 -07:00
Linus Torvalds
a55da8a0dd Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the outstanding target-pending fixes for v4.9-rc2.

  This includes:

   - Fix v4.1.y+ reference leak regression with concurrent TMR
     ABORT_TASK + session shutdown. (Vaibhav Tandon)

   - Enable tcm_fc w/ SCF_USE_CPUID to avoid host exchange timeouts
     (Hannes)

   - target/user error sense handling fixes. (Andy + MNC + HCH)

   - Fix iscsi-target NOP_OUT error path iscsi_cmd descriptor leak
     (Varun)

   - Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni +
     Nixon Vincent)

   - Revert a v4.8 residual overflow change, that breaks sg_inq with
     small allocation lengths.

  There are a number of folks stress testing the v4.1.y regression fix
  in their environments, and more folks doing iser-target I/O stress
  testing atop recent v4.x.y code.

  There is also one v4.2.y+ RCU conversion regression related to
  explicit NodeACL configfs changes, that is still being tracked down"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target/tcm_fc: use CPU affinity for responses
  target/tcm_fc: Update debugging statements to match libfc usage
  target/tcm_fc: return detailed error in ft_sess_create()
  target/tcm_fc: print command pointer in debug message
  target: fix potential race window in target_sess_cmd_list_waiting()
  Revert "target: Fix residual overflow handling in target_complete_cmd_with_length"
  target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
  target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
  target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
  iscsi-target: fix iscsi cmd leak
  iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"
  target/user: Fix comments to not refer to data ring
  target/user: Return an error if cmd data size is too large
  target/user: Use sense_reason_t in tcmu_queue_cmd_ring
2016-10-23 16:37:58 -07:00
Linus Torvalds
e6995f22d3 Couple of hwmon fixes
Fix a potential ERR_PTR dereference in max31790 driver,
 and handle handle temperature readings below 0 in adm9240
 driver.
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Merge tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "Couple of hwmon fixes:

  Fix a potential ERR_PTR dereference in max31790 driver, and handle
  temperature readings below 0 in adm9240 driver"

* tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (max31790) potential ERR_PTR dereference
  hwmon: (adm9240) handle temperature readings below 0
2016-10-23 16:21:28 -07:00
Linus Torvalds
5766e9d25f A small bug fix and a new driver for acting as an IPMI device.
I was on vacation during the merge window (a long vacation)
 but this is a bug fix that should go in and a new driver that shouldn't
 hurt anything.
 
 This has been in linux-next for a month or so.
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Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "A small bug fix and a new driver for acting as an IPMI device.

  I was on vacation during the merge window (a long vacation) but this
  is a bug fix that should go in and a new driver that shouldn't hurt
  anything.

  This has been in linux-next for a month or so"

* tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: fix crash on reading version from proc after unregisted bmc
  ipmi/bt-bmc: remove redundant return value check of platform_get_resource()
  ipmi/bt-bmc: add a dependency on ARCH_ASPEED
  ipmi: Fix ioremap error handling in bt-bmc
  ipmi: add an Aspeed BT IPMI BMC driver
2016-10-23 15:56:23 -07:00
Javier Martinez Canillas
6d8d271eee gpio: ath79: Fix module autoload
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/gpio/gpio-ath79.ko | grep alias
$

After this patch:

$ modinfo drivers/gpio/gpio-ath79.ko | grep alias
alias:          of:N*T*Cqca,ar9340-gpioC*
alias:          of:N*T*Cqca,ar9340-gpio
alias:          of:N*T*Cqca,ar7100-gpioC*
alias:          of:N*T*Cqca,ar7100-gpio

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Aban Bedel <albeu@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-24 00:23:05 +02:00
Linus Torvalds
0c2b6dc4fd Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "This updates contains:

   - A revert which addresses a boot failure on ARM Sun5i platforms

   - A new clocksource driver, which has been delayed beyond rc1 due to
     an interrupt driver issue which was unearthed by this driver. The
     debugging of that issue and the discussion about the proper
     solution made this driver miss the merge window. There is no point
     in delaying it for a full cycle as it completes the basic mainline
     support for the new JCore platform and does not create any risk
     outside of that platform"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
  clocksource: Add J-Core timer/clocksource driver
  of: Add J-Core timer bindings
2016-10-22 10:23:15 -07:00
Linus Torvalds
3e9679a365 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Three fixes, a hw-enablement and a cross-arch fix/enablement change:

   - SGI/UV fix for older platforms

   - x32 signal handling fix

   - older x86 platform bootup APIC fix

   - AVX512-4VNNIW (Neural Network Instructions) and AVX512-4FMAPS
     (Multiply Accumulation Single precision instructions) enablement.

   - move thread_info back into x86 specific code, to make life easier
     for other architectures trying to make use of
     CONFIG_THREAD_INFO_IN_TASK_STRUCT=y"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot/smp: Don't try to poke disabled/non-existent APIC
  sched/core, x86: Make struct thread_info arch specific again
  x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()
  x86/platform/UV: Fix support for EFI_OLD_MEMMAP after BIOS callback updates
  x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features
  x86/vmware: Skip timer_irq_works() check on VMware
2016-10-22 09:58:49 -07:00
Linus Torvalds
86c5bf7101 Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vmap stack fixes from Ingo Molnar:
 "This is fallout from CONFIG_HAVE_ARCH_VMAP_STACK=y on x86: stack
  accesses that used to be just somewhat questionable are now totally
  buggy.

  These changes try to do it without breaking the ABI: the fields are
  left there, they are just reporting zero, or reporting narrower
  information (the maps file change)"

* 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  mm: Change vm_is_stack_for_task() to vm_is_stack_for_current()
  fs/proc: Stop trying to report thread stacks
  fs/proc: Stop reporting eip and esp in /proc/PID/stat
  mm/numa: Remove duplicated include from mprotect.c
2016-10-22 09:39:10 -07:00
Linus Torvalds
bfb7bfef6f Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
 "Mostly irqchip driver fixes, plus a symbol export"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kernel/irq: Export irq_set_parent()
  irqchip/gic: Add missing \n to CPU IF adjustment message
  irqchip/jcore: Don't show Kconfig menu item for driver
  irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
  irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
  irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
2016-10-22 09:33:51 -07:00
Linus Torvalds
90e01058bc Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
 "Add Ard Biesheuvel as EFI co-maintainer, plus fix an ARM build bug
  with older toolchains"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm: Fix absolute relocation detection for older toolchains
  MAINTAINERS: Add myself as EFI maintainer
2016-10-22 09:32:10 -07:00
Ville Syrjälä
ff8560512b x86/boot/smp: Don't try to poke disabled/non-existent APIC
Apparently trying to poke a disabled or non-existent APIC
leads to a box that doesn't even boot. Let's not do that.

No real clue if this is the right fix, but at least my
P3 machine boots again.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: dyoung@redhat.com
Cc: kexec@lists.infradead.org
Cc: stable@vger.kernel.org
Fixes: 2a51fe083e ("arch/x86: Handle non enumerated CPU after physical hotplug")
Link: http://lkml.kernel.org/r/1477102684-5092-1-git-send-email-ville.syrjala@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-22 10:47:54 +02:00
Linus Torvalds
dcd4693cf4 powerpc fixes for 4.9 #3
Fixes marked for stable:
  - Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
  - cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
 
 Fixes for code merged this cycle:
  - Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
  - Drop dump_numa_memory_topology() (Michael Ellerman)
  - Fix numa topology console print (Aneesh Kumar K.V)
  - Ignore the pkey system calls for now (Stephen Rothwell)
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Merge tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes marked for stable:
   - Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
   - cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)

  Fixes for code merged this cycle:
   - Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
   - Drop dump_numa_memory_topology() (Michael Ellerman)
   - Fix numa topology console print (Aneesh Kumar K.V)
   - Ignore the pkey system calls for now (Stephen Rothwell)"

* tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Ignore the pkey system calls for now
  powerpc: Fix numa topology console print
  powerpc/mm: Drop dump_numa_memory_topology()
  cxl: Prevent adapter reset if an active context exists
  powerpc/boot: Fix boot on systems with uncompressed kernel image
  powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
2016-10-21 19:13:00 -07:00
Linus Torvalds
a23b27ae12 KVM fixes for v4.9-rc2
ARM:
  - avoid livelock when walking guest page tables
  - fix HYP mode static keys without CC_HAVE_ASM_GOTO
 
 MIPS:
  - fix a build error without TRACEPOINTS_ENABLED
 
 s390:
  - reject a malformed userspace configuration
 
 x86:
  - suppress a warning without CONFIG_CPU_FREQ
  - initialize whole irq_eoi array
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - avoid livelock when walking guest page tables
   - fix HYP mode static keys without CC_HAVE_ASM_GOTO

  MIPS:
   - fix a build error without TRACEPOINTS_ENABLED

  s390:
   - reject a malformed userspace configuration

  x86:
   - suppress a warning without CONFIG_CPU_FREQ
   - initialize whole irq_eoi array"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  arm/arm64: KVM: Map the BSS at HYP
  arm64: KVM: Take S1 walks into account when determining S2 write faults
  KVM: s390: reject invalid modes for runtime instrumentation
  kvm: x86: memset whole irq_eoi
  kvm/x86: Fix unused variable warning in kvm_timer_init()
  KVM: MIPS: Add missing uaccess.h include
2016-10-21 19:09:29 -07:00
Linus Torvalds
02593ac680 NFS client bugfixes for Linux 4.9
Stable bugfix:
 - Fix last_write_offset incorrectly set to page boundary
 
 Other bugfix:
 - Fix missing-braces warning
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Merge tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client bugfixes from Anna Schumaker:
 "Just two bugfixes this time:

  Stable bugfix:
   - Fix last_write_offset incorrectly set to page boundary

  Other bugfix:
   - Fix missing-braces warning"

* tag 'nfs-for-4.9-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  nfs4: fix missing-braces warning
  pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary
2016-10-21 19:06:59 -07:00
Linus Torvalds
43ef55daa7 ACPI fixes for v4.9-rc2
Specifics:
 
  - Update the ACPI WDAT-based watchdog driver to ping the hardware
    during system resume to prevent a reset from occurring after the
    resume is complete (Mika Westerberg).
 
  - Fix the return value of the pcc_mbox_request_channel() stub for
    CONFIG_PCC unset (Hoan Tran).
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Merge tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix an issue related to system resume in the new WDAT-based
  watchdog driver and a return value of a stub function in the ACPI CPPC
  framework.

  Specifics:

   - Update the ACPI WDAT-based watchdog driver to ping the hardware
     during system resume to prevent a reset from occurring after the
     resume is complete (Mika Westerberg).

   - Fix the return value of the pcc_mbox_request_channel() stub for
     CONFIG_PCC unset (Hoan Tran)"

* tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  watchdog: wdat_wdt: Ping the watchdog on resume
  mailbox: PCC: Fix return value of pcc_mbox_request_channel()
2016-10-21 15:54:45 -07:00
Shaohua Li
b4a1278c78 badblocks: badblocks_set/clear update unacked_exist
When bandblocks_set acknowledges a range or badblocks_clear a range,
it's possible all badblocks are acknowledged. We should update
unacked_exist if this occurs.

Signed-off-by: Shaohua Li <shli@fb.com>
Reviewed-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Tested-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-10-21 15:45:47 -06:00
Sagi Grimberg
f660f60667 softirq: Display IRQ_POLL for irq-poll statistics
This library was moved to the generic area and was
renamed to irq-poll. Hence, update proc/softirqs output accordingly.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-10-21 15:45:47 -06:00
Rafael J. Wysocki
956c8974da Merge branches 'acpi-wdat' and 'acpi-cppc'
* acpi-wdat:
  watchdog: wdat_wdt: Ping the watchdog on resume

* acpi-cppc:
  mailbox: PCC: Fix return value of pcc_mbox_request_channel()
2016-10-21 22:24:23 +02:00
Thomas Gleixner
a442950d4a GIC updates for Linux 4.9-rc2
- Fix for 32bit accesses that should be 64bit on 64bit machines
 - Fix for a field decoding macro
 - Beautify a warning message
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Merge tag 'gic-fixes-for-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull GIC updates from Marc Zyngier:

 - Fix for 32bit accesses that should be 64bit on 64bit machines
 - Fix for a field decoding macro
 - Beautify a warning message
2016-10-21 21:40:29 +02:00
Linus Torvalds
6edc51a8d4 SCSI fixes on 20161021
Five small fixes.  Some of these, like the nested spinlock overwriting saved
 flags and the Kasan use after free look serious, but they seem not to have
 been picked up in testing or seen in the field.  The biggest user visible
 issue is probably the wrong device handler for Clariion, which means that alua
 doesn't bind to the array like it should.
 
 Signed-off-by: James Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Five small fixes.

  Some of these, like the nested spinlock overwriting saved flags and
  the Kasan use after free look serious, but they seem not to have been
  picked up in testing or seen in the field.

  The biggest user visible issue is probably the wrong device handler
  for Clariion, which means that alua doesn't bind to the array like it
  should"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ipr: Fix async error WARN_ON
  scsi: zfcp: spin_lock_irqsave() is not nestable
  scsi: Remove one useless stack variable
  scsi: Fix use-after-free
  scsi: Replace wrong device handler name for CLARiiON arrays
2016-10-21 10:57:09 -07:00
Linus Torvalds
ecd06f2883 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "A set of fixes that missed the merge window, mostly due to me being
  away around that time.

  Nothing major here, a mix of nvme cleanups and fixes, and one fix for
  the badblocks handling"

* 'for-linus' of git://git.kernel.dk/linux-block:
  nvmet: use symbolic constants for CNS values
  nvme: use symbolic constants for CNS values
  nvme.h: add an enum for cns values
  nvme.h: don't use uuid_be
  nvme.h: resync with nvme-cli
  nvme: Add tertiary number to NVME_VS
  nvme : Add sysfs entry for NVMe CMBs when appropriate
  nvme: don't schedule multiple resets
  nvme: Delete created IO queues on reset
  nvme: Stop probing a removed device
  badblocks: fix overlapping check for clearing
2016-10-21 10:54:01 -07:00
Linus Torvalds
e59f30b417 pci-v4.9-fixes-1
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Merge tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "This includes:

   - Fix for a Layerscape driver issue that causes a use-before-set
     crash

   - Maintainer update for the Synopsis prototyping device driver"

* tag 'pci-v4.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: designware-plat: Update author email address
  PCI: layerscape: Fix drvdata usage before assignment
  PCI: designware-plat: Change maintainer to Jose Abreu
2016-10-21 10:48:58 -07:00
Radim Krčmář
658f7c4bb7 KVM/ARM updates for 4.9-rc2
- Handle faults generated by the page table walker as being writes
 - Map the BSS at EL2
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Merge tag 'kvm-arm-for-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm

KVM/ARM updates for 4.9-rc2

- Handle faults generated by the page table walker as being writes
- Map the BSS at EL2
2016-10-21 18:49:53 +02:00
Marc Zyngier
c8ea0395ff arm/arm64: KVM: Map the BSS at HYP
When used with a compiler that doesn't implement "asm goto"
(such as the AArch64 port of GCC 4.8), jump labels generate a
memory access to find out about the value of the key (instead
of just patching the code). The key itself is likely to be
stored in the BSS.

This is perfectly fine, except that we don't map the BSS at HYP,
leading to an exploding kernel at the first access. The obvious
fix is simply to map the BSS there (which should have been done
a long while ago, but hey...).

Reported-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-10-21 17:26:24 +01:00
Will Deacon
60e21a0ef5 arm64: KVM: Take S1 walks into account when determining S2 write faults
The WnR bit in the HSR/ESR_EL2 indicates whether a data abort was
generated by a read or a write instruction. For stage 2 data aborts
generated by a stage 1 translation table walk (i.e. the actual page
table access faults at EL2), the WnR bit therefore reports whether the
instruction generating the walk was a load or a store, *not* whether the
page table walker was reading or writing the entry.

For page tables marked as read-only at stage 2 (e.g. due to KSM merging
them with the tables from another guest), this could result in livelock,
where a page table walk generated by a load instruction attempts to
set the access flag in the stage 1 descriptor, but fails to trigger
CoW in the host since only a read fault is reported.

This patch modifies the arm64 kvm_vcpu_dabt_iswrite function to
take into account stage 2 faults in stage 1 walks. Since DBM cannot be
disabled at EL2 for CPUs that implement it, we assume that these faults
are always causes by writes, avoiding the livelock situation at the
expense of occasional, spurious CoWs.

We could, in theory, do a bit better by checking the guest TCR
configuration and inspecting the page table to see why the PTE faulted.
However, I doubt this is measurable in practice, and the threat of
livelock is real.

Cc: <stable@vger.kernel.org>
Cc: Julien Grall <julien.grall@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-10-21 17:25:47 +01:00
Linus Torvalds
ec366cd195 drm fixes for 4.9 rc2 - vmware, fsl-dcu, armada and etnaviv
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Merge tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux

Pull more drm fixes from Dave Airlie:
 "Mainly some vmwgfx fixes, but also some fixes for armada, etnaviv and
  fsl-dcu"

* tag 'drm-fixes-for-v4.9-rc2-part2' of git://people.freedesktop.org/~airlied/linux:
  drm/fsl-dcu: enable pixel clock when enabling CRTC
  drm/fsl-dcu: do not transfer registers in mode_set_nofb
  drm/fsl-dcu: do not transfer registers on plane init
  drm/fsl-dcu: enable TCON bypass mode by default
  drm/vmwgfx: Adjust checks for null pointers in 13 functions
  drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
  drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
  drm/vmwgfx: Avoid validating views on view destruction
  drm/vmwgfx: Limit the user-space command buffer size
  drm/vmwgfx: Remove a leftover debug printout
  drm/vmwgfx: Allow resource relocations on byte boundaries
  drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
  drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
  drm/vmwgfx: Replace numeric parameter like 0444 with macro
  drm/etnaviv: block 64K of address space behind each cmdstream
  drm/etnaviv: ensure write caches are flushed at end of user cmdstream
  drm/armada: fix clock counts
2016-10-21 09:14:35 -07:00
Joao Pinto
02a1b8f416 PCI: designware-plat: Update author email address
Although I am leaving Synopsys, I would like to keep working with the linux
kernel community and help in what you might find useful.  For that I am
sending this patch to change my contact e-mail.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-10-21 09:54:46 -05:00
Javier Martinez Canillas
91f1551a74 gpio: ts4800: Fix module autoload
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
$

After this patch:

$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
alias:          of:N*T*Ctechnologic,ts4800-gpioC*
alias:          of:N*T*Ctechnologic,ts4800-gpio

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-21 14:55:07 +02:00