Triggering the watchdog faster than T_WDMIN=256ms leads to resets of the
DA9063 chip. The datasheet says that the watchdog must only be triggered
in the timeframe T_WDMIN to T_WDMAX. The T_WDMAX is configured in the
driver.
Signed-off-by: NStefan Christ <s.christ@phytec.de>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Some drivers have the WDIOF_MAGICCLOSE set, which means that applications
need to write 'V' to the watchdog device before closing, otherwise the
driver won't stop the watchdog timer.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The watchdog-test utility outputs all messages to stderr, even those
that are not error messages.  Output to stdout instead.

Instead of flushing the output after every write, just disabled
the output buffer.

Also display a dot for every ping of the watchdog, so that the user
knows that it's working.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The TCO I/O base is 40h rather than the usual 30h, and the re_reboot
bit is at ACPIBASE+8.
Signed-off-by: NYong, Jonathan <jonathan.yong@intel.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The Apollo Lake Watchdog has the no_reboot flag in the 4th bit.
Signed-off-by: NYong, Jonathan <jonathan.yong@intel.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

In case of error, the function devm_kzalloc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

In case of error, the function devm_kzalloc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The I2C core removes the manufacturer prefix from the compatible field
so it reports to user-space the uevent i2c:rave-wdt, but this doesn't
match with the i2c_device_id (i2c:ziirave-wdt) array so the module is not
autoloaded. Correct the I2C device id to match with the reported uevent
and fix the module autoloading functionality.
Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The option 'default n' and its absence are equal for kbuild,
which makes explicit 'default n' redundant.
Signed-off-by: NVladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Maxim PMIC MAX77620 is Power management IC which have multiple
sub blocks like regulators (DCDC/LDOs), GPIO, RTC, Clock, Watchdog
timer etc.

Add the driver for watchdog timer under watchdog framework.
The driver implements the watchdog callbacks to start, stop,
ping and set timeout for watchodg framework.
Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Adds watchdog enable support for Fintek F81866 Super-IO chip to
Fintek wdt driver (f71808e_wdt)

Tested and verified on iBASE MI802 Industrial PC

Datasheet references:
http://www.alldatasheet.com/datasheet-pdf/pdf/459085/FINTEK/F81866AD-I.htmlSuggested-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NJi-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Fix the following warnings from sparse due to casting to/from an __iomem
annotated variable:

drivers/watchdog/sirfsoc_wdt.c:48:18: warning: incorrect type in assignment (different address spaces)
drivers/watchdog/sirfsoc_wdt.c:48:18:    expected void [noderef] <asn:2>*wdt_base
drivers/watchdog/sirfsoc_wdt.c:48:18:    got void *
drivers/watchdog/sirfsoc_wdt.c:64:18: warning: incorrect type in assignment (different address spaces)
drivers/watchdog/sirfsoc_wdt.c:64:18:    expected void [noderef] <asn:2>*wdt_base
drivers/watchdog/sirfsoc_wdt.c:64:18:    got void *
drivers/watchdog/sirfsoc_wdt.c:82:54: warning: incorrect type in initializer (different address spaces)
drivers/watchdog/sirfsoc_wdt.c:82:54:    expected void [noderef] <asn:2>*wdt_base
drivers/watchdog/sirfsoc_wdt.c:82:54:    got void *
drivers/watchdog/sirfsoc_wdt.c:99:54: warning: incorrect type in initializer (different address spaces)
drivers/watchdog/sirfsoc_wdt.c:99:54:    expected void [noderef] <asn:2>*wdt_base
drivers/watchdog/sirfsoc_wdt.c:99:54:    got void *
drivers/watchdog/sirfsoc_wdt.c:153:44: warning: incorrect type in argument 2 (different address spaces)
drivers/watchdog/sirfsoc_wdt.c:153:44:    expected void *data
drivers/watchdog/sirfsoc_wdt.c:153:44:    got void [noderef] <asn:2>*[assigned] base
Signed-off-by: NBen Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

A running watchdog is marked with WDOG_HW_RUNNING, not with WDOG_ACTIVE.
WDOG_ACTIVE indicates that the watchdog device has been opened from user
space.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The description of min_hw_heartbeat_ms is misleading and needs some
improvements.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch uses the new flag WDOG_HW_RUNNING in driver.
According to the definition of this flag, it should be set,
if watchdog is running after booting, before it's opened.
Signed-off-by: NPratyush Anand <panand@redhat.com>
Signed-off-by: NFu Wei <fu.wei@linaro.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Using max_hw_heartbeat_ms instead of max_timeout gives the flexibility to
achieve higher user "timeout". Therefore, use this new infrastructure.
Signed-off-by: NPratyush Anand <panand@redhat.com>
Signed-off-by: NFu Wei <fu.wei@linaro.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

When max_hw_heartbeat_ms has a none zero value, max_timeout is not used.
So it's value can be 0. In such case if a driver uses min_timeout
functionality, then check will always fail.

This patch fixes above issue.
Signed-off-by: NPratyush Anand <panand@redhat.com>
Signed-off-by: NFu Wei <fu.wei@linaro.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This driver does not do anything special in module init/exit. This patch
eliminates the module init/exit boilerplate code by utilizing the
module_isa_driver macro.
Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Provides generic watchdog features as well as reboot support for the
Aspeed SoCs.
Signed-off-by: NJoel Stanley <joel@jms.id.au>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NJoel Stanley <joel@jms.id.au>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

If we leave set_timeout empty, the core will do exactly what is
implemented here anyway.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

And move module_init/exit to the proper place while here.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Error string and comment say we fall back to a default, but in reality
we bailed out. Refactor the code to use the core helper which then
matches the described behaviour. While updating the init message anyhow,
shorten it while we are here; no need for versioning there as well and
the name is already given via pr_fmt.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The history is obsolete, especially since we switched to watchdog
framework. The section markers also don't make sense anymore given
the small size of the driver.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add a maintainer for the HPE watchdog driver
Signed-off-by: NBrian Boylston <brian.boylston@hpe.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Remove Tom's email address from the documentation
Signed-off-by: NBrian Boylston <brian.boylston@hpe.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This helps in reducing code in .remove callbacks and sometimes
dropping .remove callbacks entirely.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Pull MTD fix from Brian Norris:
 "Late MTD fix for v4.7:

  One regression in the Device Tree handling for OMAP NAND handling of
  the ELM node.  TI migrated to using the property name "ti,elm-id", but
  forgot to keep compatibility with the old "elm_id" property.

  Also, might as well send out this MAINTAINERS fixup now"

* tag 'for-linus-20160715' of git://git.infradead.org/linux-mtd:
  mtd: nand: omap2: Add check for old elm binding
  MAINTAINERS: Add file patterns for mtd device tree bindings

Pull input fixes from Dmitry Torokhov:
 "A few last-minute updates for the input subsystem"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ts4800-ts - add missing of_node_put after calling of_parse_phandle
  Input: synaptics-rmi4 - use of_get_child_by_name() to fix refcount
  Revert "Input: wacom_w8001 - drop use of ABS_MT_TOOL_TYPE"
  Input: xpad - validate USB endpoint count during probe
  Input: add SW_PEN_INSERTED define

Pull workqueue fix from Tejun Heo:
 "The optimization for setting unbound worker affinity masks collided
  with recent scheduler changes triggering warning messages.

  This late pull request fixes the bug by removing the optimization"

* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Fix setting affinity of unbound worker threads

Without this check, the following XFS_I invocations would return bad
pointers when used on non-XFS inodes (perhaps pointers into preceding
allocator chunks).

This could be used by an attacker to trick xfs_swap_extents into
performing locking operations on attacker-chosen structures in kernel
memory, potentially leading to code execution in the kernel.  (I have
not investigated how likely this is to be usable for an attack in
practice.)
Signed-off-by: NJann Horn <jann@thejh.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix a memory leak on probe error of the airspy usb device driver.

The problem is triggered when more than 64 usb devices register with
v4l2 of type VFL_TYPE_SDR or VFL_TYPE_SUBDEV.

The memory leak is caused by the probe function of the airspy driver
mishandeling errors and not freeing the corresponding control structures
when an error occours registering the device to v4l2 core.

A badusb device can emulate 64 of these devices, and then through
continual emulated connect/disconnect of the 65th device, cause the
kernel to run out of RAM and crash the kernel, thus causing a local DOS
vulnerability.

Fixes CVE-2016-5400
Signed-off-by: NJames Patrick-Evans <james@jmp-e.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In commit 2c1ea4c7 ("EDAC, sb_edac: Use cpu family/model in driver
detection") I broke Knights Landing because I failed to notice that it
called a wrapper macro "sbridge_get_all_devices_knl" instead of
"sbridge_get_all_devices" like all the other types.

Now that we include the processor type in the pci_id_table structure we
can skip the wrappers and just have the sbridge_get_all_devices() check
the type to decide whether to allow duplicate devices and controllers to
have registers spread across buses.

Fixes: 2c1ea4c7 ("EDAC, sb_edac: Use cpu family/model in driver detection")
Tested-by: NLukasz Odzioba <lukasz.odzioba@intel.com>
Acked-by: NAristeu Rozanski <aris@redhat.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.
Signed-off-by: NPeter Chen <peter.chen@nxp.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Merge misc fixes from Andrew Morton:
 "20 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  m32r: fix build warning about putc
  mm: workingset: printk missing log level, use pr_info()
  mm: thp: refix false positive BUG in page_move_anon_rmap()
  mm: rmap: call page_check_address() with sync enabled to avoid racy check
  mm: thp: move pmd check inside ptl for freeze_page()
  vmlinux.lds: account for destructor sections
  gcov: add support for gcc version >= 6
  mm, meminit: ensure node is online before checking whether pages are uninitialised
  mm, meminit: always return a valid node from early_pfn_to_nid
  kasan/quarantine: fix bugs on qlist_move_cache()
  uapi: export lirc.h header
  madvise_free, thp: fix madvise_free_huge_pmd return value after splitting
  Revert "scripts/gdb: add documentation example for radix tree"
  Revert "scripts/gdb: add a Radix Tree Parser"
  scripts/gdb: Perform path expansion to lx-symbol's arguments
  scripts/gdb: add constants.py to .gitignore
  scripts/gdb: rebuild constants.py on dependancy change
  scripts/gdb: silence 'nothing to do' message
  kasan: add newline to messages
  mm, compaction: prevent VM_BUG_ON when terminating freeing scanner

Pull rdma fixes from Doug Ledford:
 "Round three of 4.7 rc fixes:
   - two fixes for hfi1
   - two fixes for i40iw
   - one omission correction in the port table counter arrays"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  i40iw: Enable remote access rights for stag allocation
  i40iw: do not print unitialized variables in error message
  IB core: Add port_xmit_wait counter
  IB/hfi1: Fix sleep inside atomic issue in init_asic_data
  IB/hfi1: Correct issues with sc5 computation

Pull i2c fixes from Wolfram Sang:
 "Four driver bugfixes for the I2C subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mux: reg: wrong condition checked for of_address_to_resource return value
  i2c: tegra: Correct error path in probe
  i2c: remove __init from i2c_register_board_info()
  i2c: qup: Fix wrong value of index variable