Include appropriate header file ide-cd.h in ide-cd_verbose.c because
function ide_cd_log_error() has its prototype declaration in ide-cd.h.
Also, include linux/ide.h because it contains certain declarations
necessary for including ide-cd.h.
This eliminates the following warnings in ide-cd_verbose.c:
drivers/ide/ide-cd_verbose.c:251:6: warning: no previous prototype for ‘ide_cd_log_error’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch removes CONFIG_MTD_PARTITIONS in config files for blackfin.
Because CONFIG_MTD_PARTITIONS was removed by commit
6a8a98b22b.
Signed-off-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
Move code for the SEC faults from the IRQ hanlders into IRQ actions.
refine bfin fault routine handle
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
blackfin: bf60x: clock: return 0 upon error from clk_round_rate()
clk_round_rate() should return 0 upon an error, rather than returning
a negative error code. This is because clk_round_rate() is being
changed to return an unsigned return type rather than a signed type,
since some clock sources can generate rates higher than (2^31)-1 Hz.
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
Commit 9a46ad6d6d "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Jiang Liu <liuj97@gmail.com>
For all uapi headers, need use "_UAPI" prefix for its guard macro
(which will be stripped by "scripts/headers_installer.sh").
Also be sure that all files have their guard macros.
Also be sure that all "#endif" are followed with comments, and no '\t'
for guard macro
Signed-off-by: Chen Gang <gang.chen@asianux.com>
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
David's "ack" for this; I'm sure he approves, but he's been pretty silent
lately)
- Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
- Last (?) round of pxa3xx improvements for supporting Armada 370/XP
- Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
- Quad read mode support for SPI NOR driver (m25p80)
- Update Davinci NAND driver to prepare for use on new platforms
- Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
- Miscellaneous NAND device support (new IDs)
- Add READ RETRY support for Micron MLC NAND
- Support new GPMI NAND ECC layout device-tree binding
- Avoid mapping stack/vmalloc() memory for GPMI NAND DMA
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Merge tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get
David's "ack" for this; I'm sure he approves, but he's been pretty silent
lately)
- Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver
- Last (?) round of pxa3xx improvements for supporting Armada 370/XP
- Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.)
- Quad read mode support for SPI NOR driver (m25p80)
- Update Davinci NAND driver to prepare for use on new platforms
- Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending
- Miscellaneous NAND device support (new IDs)
- Add READ RETRY support for Micron MLC NAND
- Support new GPMI NAND ECC layout device-tree binding
- Avoid mapping stack/vmalloc() memory for GPMI NAND DMA
* tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd: (151 commits)
mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf
mtd: gpmi: allocate a proper buffer for non ECC read/write
mtd: m25p80: Set rx_nbits for Quad SPI transfers
mtd: m25p80: Enable Quad SPI read transfers for s25fl512s
mtd: s3c2410: Merge plat/regs-nand.h into s3c2410.c
mtd: mtdram: add missing 'const'
mtd: m25p80: assign default read command
mtd: nuc900_nand: remove redundant return value check of platform_get_resource()
mtd: plat_nand: remove redundant return value check of platform_get_resource()
mtd: nand: add Intel manufacturer ID
mtd: nand: add SanDisk manufacturer ID
mtd: nand: add support for Samsung K9LCG08U0B
mtd: nand: pxa3xx: Add support for 2048 bytes page size devices
mtd: m25p80: Use OPCODE_QUAD_READ_4B for 4-byte addressing
mtd: nand: don't use {read,write}_buf for 8-bit transfers
mtd: nand: use __packed shorthand
mtd: nand: support Micron READ RETRY
mtd: nand: add generic READ RETRY support
mtd: nand: add ONFI vendor block for Micron
mtd: nand: localize ECC failures per page
...
Pull LED subsystem update from Bryan Wu:
"Basically this cycle is mostly cleanup for LED subsystem"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
leds: s3c24xx: Remove hardware.h inclusion
leds: replace list_for_each with list_for_each_entry
leds: kirkwood: Cleanup in header files
leds: pwm: Remove a warning on non-DT platforms
leds: leds-pwm: fix duty time overflow.
leds: leds-mc13783: Remove unneeded mc13xxx_{un}lock
leds: leds-mc13783: Remove duplicate field in platform data
drivers: leds: leds-tca6507: check CONFIG_GPIOLIB whether defined for 'gpio_base'
leds: lp5523: Support LED MUX configuration on running a pattern
leds: lp5521/5523: Fix multiple engine usage bug
LEDS: tca6507 - fix up some comments.
LEDS: tca6507: add device-tree support for GPIO configuration.
LEDS: tca6507 - fix bugs in parsing of device-tree configuration.
Here are tiny and assorted serial driver fixes that have been in a
branch in my tree for a while and somehow did not get properly merged
into my big TTY / Serial pull request for 3.14-rc1. Sorry about that.
All have been in linux-next for a while with no issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial fixes from Greg KH:
"Here are tiny and assorted serial driver fixes that have been in a
branch in my tree for a while and somehow did not get properly merged
into my big TTY / Serial pull request for 3.14-rc1. Sorry about that.
All have been in linux-next for a while with no issues"
* tag 'tty-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: xuartps: Properly guard sysrq specific code
serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip
serial: icom: dereference after free in load_code()
serial: 8250_dw: add new ACPI IDs
tty: serial: pch: don't crash if DMA enabled but not loaded
serial: samsung: move clock deactivation below uart registration
dominated by platform support for Qualcomm's MSM SoCs, DT binding
updates for TI's OMAP-ish processors and additional support for Samsung
chips. Additionally there are other smaller clock driver changes and
several last minute fixes. This pull request also includes the HiSilicon
support that depends on the already-merged arm-soc pull request.
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Merge tag 'clk-for-linus-3.14-part2' of git://git.linaro.org/people/mike.turquette/linux
Pull more clock framework changes from Mike Turquette:
"The second half of the clock framework pull requeust for 3.14 is
dominated by platform support for Qualcomm's MSM SoCs, DT binding
updates for TI's OMAP-ish processors and additional support for
Samsung chips.
Additionally there are other smaller clock driver changes and several
last minute fixes. This pull request also includes the HiSilicon
support that depends on the already-merged arm-soc pull request"
[ Fix up stupid compile error in the source tree with evil merge - Grumpy Linus ]
* tag 'clk-for-linus-3.14-part2' of git://git.linaro.org/people/mike.turquette/linux: (49 commits)
clk: sort Makefile
clk: sunxi: fix overflow when setting up divided factors
clk: Export more clk-provider functions
dt-bindings: qcom: Fix warning with duplicate dt define
clk: si5351: remove variant from platform_data
clk: samsung: Remove unneeded semicolon
clk: qcom: Fix modular build
ARM: OMAP3: use DT clock init if DT data is available
ARM: AM33xx: remove old clock data and link in new clock init code
ARM: AM43xx: Enable clock init
ARM: OMAP: DRA7: Enable clock init
ARM: OMAP4: remove old clock data and link in new clock init code
ARM: OMAP2+: io: use new clock init API
ARM: OMAP2+: PRM: add support for initializing PRCM clock modules from DT
ARM: OMAP3: hwmod: initialize clkdm from clkdm_name
ARM: OMAP: hwmod: fix an incorrect clk type cast with _get_clkdm
ARM: OMAP2+: clock: use driver API instead of direct memory read/write
ARM: OMAP2+: clock: add support for indexed memmaps
ARM: dts: am43xx clock data
ARM: dts: AM35xx: use DT clock data
...
When user tried to change generic options using "ethtool -s" command, while SFP
module is plugged out or during module detection, the command would have failed
with "Unsupported port type" message. The fix is to ignore the port option in
case it's same as the current port configuration.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The previous ceph-client merge resulted in ceph not even building,
because there was a merge conflict that wasn't visible as an actual data
conflict: commit 7221fe4c2e ("ceph: add acl for cephfs") added support
for POSIX ACL's into Ceph, but unluckily we also had the VFS tree change
a lot of the POSIX ACL helper functions to be much more helpful to
filesystems (see for example commits 2aeccbe957 "fs: add generic
xattr_acl handlers", 5bf3258fd2 "fs: make posix_acl_chmod more useful"
and 37bc15392a "fs: make posix_acl_create more useful")
The reason this conflict wasn't obvious was many-fold: because it was a
semantic conflict rather than a data conflict, it wasn't visible in the
git merge as a conflict. And because the VFS tree hadn't been in
linux-next, people hadn't become aware of it that way. And because I
was at jury duty this morning, I was using my laptop and as a result not
doing constant "allmodconfig" builds.
Anyway, this fixes the build and generally removes a fair chunk of the
Ceph POSIX ACL support code, since the improved helpers seem to match
really well for Ceph too. But I don't actually have any way to *test*
the end result, and I was really hoping for some ACK's for this. Oh,
well.
Not compiling certainly doesn't make things easier to test, so I'm
committing this without the acks after having waited for four hours...
Plus it's what I would have done for the merge had I noticed the
semantic conflict..
Reported-by: Dave Jones <davej@redhat.com>
Cc: Sage Weil <sage@inktank.com>
Cc: Guangliang Zhao <lucienchao@gmail.com>
Cc: Li Wang <li.wang@ubuntykylin.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch fixed following Warning while executing "make htmldocs".
Warning(/net/core/skbuff.c:2164): No description found for parameter 'from'
Warning(/net/core/skbuff.c:2164): Excess function parameter 'source'
description in 'skb_zerocopy'
Replace "@source" with "@from" fixed the warning.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'rxrpc-20140126' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
RxRPC fixes
Here are some small AF_RXRPC fixes.
(1) Fix a place where a spinlock is taken conditionally but is released
unconditionally.
(2) Fix a double-free that happens when cleaning up on a checksum error.
(3) Fix handling of CHECKSUM_PARTIAL whilst delivering messages to userspace.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
These patches fix some issues caused by the DRM panel support from the
previous pull request and add two more panels (for the Toshiba AC100 as
well as the Seaboard and Ventana).
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Merge tag 'drm/for-3.14-rc1-20140123' of git://anongit.freedesktop.org/tegra/linux into drm-next
drm/tegra: Changes for v3.14-rc1 (update)
These patches fix some issues caused by the DRM panel support from the
previous pull request and add two more panels (for the Toshiba AC100 as
well as the Seaboard and Ventana).
* tag 'drm/for-3.14-rc1-20140123' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: Obtain head number from DT
drm/panel: update EDID BLOB in panel_simple_get_modes()
gpu: host1x: Remove unnecessary include
drm/tegra: Use proper data type
drm/tegra: Clarify how panel modes override others
drm/tegra: Fix possible CRTC mask for RGB outputs
drm/i915: Use drm_encoder_crtc_ok()
drm: Move drm_encoder_crtc_ok() to core
drm: provide a helper for the encoder possible_crtcs mask
drm/tegra: Don't check resource with devm_ioremap_resource()
drm/panel: Add support for Chunghwa CLAA101WA01A panel
drm/panel: Add support for Samsung LTN101NT05 panel
Sending malformed llc packets triggers this spew, which seems excessive.
WARNING: CPU: 1 PID: 6917 at net/llc/llc_output.c:46 llc_mac_hdr_init+0x85/0x90 [llc]()
device type not supported: 0
CPU: 1 PID: 6917 Comm: trinity-c1 Not tainted 3.13.0+ #95
0000000000000009 00000000007e257d ffff88009232fbe8 ffffffffac737325
ffff88009232fc30 ffff88009232fc20 ffffffffac06d28d ffff88020e07f180
ffff88009232fec0 00000000000000c8 0000000000000000 ffff88009232fe70
Call Trace:
[<ffffffffac737325>] dump_stack+0x4e/0x7a
[<ffffffffac06d28d>] warn_slowpath_common+0x7d/0xa0
[<ffffffffac06d30c>] warn_slowpath_fmt+0x5c/0x80
[<ffffffffc01736d5>] llc_mac_hdr_init+0x85/0x90 [llc]
[<ffffffffc0173759>] llc_build_and_send_ui_pkt+0x79/0x90 [llc]
[<ffffffffc057cdba>] llc_ui_sendmsg+0x23a/0x400 [llc2]
[<ffffffffac605d8c>] sock_sendmsg+0x9c/0xe0
[<ffffffffac185a37>] ? might_fault+0x47/0x50
[<ffffffffac606321>] SYSC_sendto+0x121/0x1c0
[<ffffffffac011847>] ? syscall_trace_enter+0x207/0x270
[<ffffffffac6071ce>] SyS_sendto+0xe/0x10
[<ffffffffac74aaa4>] tracesys+0xdd/0xe2
Until 2009, this was a printk, when it was changed in
bf9ae5386b: "llc: use dev_hard_header".
Let userland figure out what -EINVAL means by itself.
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
these 3 were checking in_interrupt but we have situations where
calling vunmap under this could cause a BUG to be hit in
smp_call_function_many. Use the drm_can_sleep macro instead,
which should stop this path from been taken in this case.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Pile of -fixes all over the place. Lot's of cc: stable.
Only big thing is that we've dropped the preliminary hw support tag for
bdw - it seems to work. Which also means that I'll shovel a few more bdw
patches through -fixes, there's 5 w/a patches from Ken already on
intel-gfx.
* tag 'drm-intel-fixes-2014-01-28' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Fix the offset issue for the stolen GEM objects
drm/i915: Decouple GPU error reporting from ring initialisation
i915: remove pm_qos request on error
Revert "drm/i915: Mask reserved bits in display/sprite address registers"
drm/i915: VLV2 - Fix hotplug detect bits
drm/i915: Allow reading the TIMESTAMP register on Gen8.
drm/i915: Repeat evictions whilst pageflip completions are outstanding
drm/i915: Wait for completion of pending flips when starved of fences
drm/i915: don't disable DP port after a failed link training
drm/i915: don't disable the DP port if the link is lost
drm/i915: Eliminate lots of WARNs when there's no backlight present
drm/i915: g4x/vlv: fix dp aux interrupt mask
drm/i915/ppgtt: Defer request freeing on reset
i915: send D1 opregion notification
drm/i915/bdw: remove preliminary_hw_support flag from BDW
drm/i915: Tune down reset_stat output from ERROR to debug
drm/i915: Make semaphore modparam RO
drm/i915: Fix disabled semaphores
drm/i915: Clarify relocation errnos
drm/i915: Spelling s/auxilliary/auxiliary/
Just one-liner which corrects a select statement for DRM_KMS_FB_HELPER
which looks like it was missed in the initial merge. Based on 3.13.
* 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox: (55 commits)
DRM: armada: fix missing DRM_KMS_FB_HELPER select
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Merge tag 'omapdrm-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next
omapdrm patches for 3.14
* tag 'omapdrm-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
drm/omap: Enable DT support for DMM
drm/omap: fix: change dev_unload order
drm/omap: fix: disable encoder before destroying it
drm/omap: fix: disconnect devices when omapdrm module is removed
drm/omap: fix: Defer probe if an omapdss device requests for it at connect
drm/omap: fix (un)registering irqs inside an irq handler
Conflicts:
drivers/gpu/drm/omapdrm/omap_drv.c
Only two patches this time around. One trivial and one locking fix.
* 'gma500-next' of git://github.com/patjak/drm-gma500:
drm/gma500: Lock struct_mutex around cursor updates
drivers: gpu: Mark function as static in cdv_intel_dp.c
platform_ipc.h and platform_msic.h are wrongly declaring functions as
external and with 'weak' attribute. This patch does a cleanup on those
header files.
It should have no functional change.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Link: http://lkml.kernel.org/r/1390950567-12821-1-git-send-email-david.a.cohen@linux.intel.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
If the watchdog has already triggered for whatever reason, it won't restart
unless the trigger is reset.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Major difference is that the watchdog control and counter registers
are different on both chips.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Instead of requiring the user to provide an IO address per module
parameter, auto-detect it as well as supported chips.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Try to reset the watchdog counter 4 or 2 times more often than actually
requested, to avoid spurious watchdog reset.
If this is not possible because of the min_heartbeat value, reset it at
the min_heartbeat period.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Use the min_heartbeat value instead of the calculated heartbeat value for
the first watchdog reset to avoid spurious watchdog reset.
Resetting the watchdog counter during init might lead to a watchdog fault
reset because the watchdog counter has to be running for at least
min_heartbeat.
Resetting the watchdog counter after heartbeat might lead to a watchdog
timeout reset because the watchdog counter is running for more than
max_heartbeat time.
Using min_heartbeat instead of heartbeat does not guarantee that the
watchdog won't trigger a reset, but at least it reduces the chances to be
in such a case.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Fix the secs_to_ticks macro in case 0 is passed as an argument.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add watchdog specific config for kizbox board.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Set default watchdog options in every SoC compatible with the sam9 watchdog.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add new at91sam9 watchdog properties to the documentation.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The at91sam9 watchdog timer can only be configured once, and the current
implementation tries to configure it in a static way:
- 2 seconds timeout
- wdt restart every 500ms
If the timer has already been configured with different values, it returns an
error and do not create any watchdog device.
This is not critical if the watchdog is disabled, but if it has been enabled with
different timeout values it will lead to a SoC reset.
This patch series tries to address this issue by adapting the heartbeat value
according the WDT timer config:
- it first tries to configure the timer as requested.
- if it fails it fallbacks to the current config, adapting its heartbeat timer
to the needs
This patch series also move to a dynamically allocated at91wdt device instead
of the static instance.
It adds a new at91 wdt type: software. This new type make use of the at91 wdt
interrupt to trigger a software reboot.
Finally it adds several properties to the device tree bindings.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
mach-moxart lacks a separate register for reset; as a workaround,
add a function that can be hooked to arm_pm_restart.
Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Convert mpc8xxx_wdt.c to the new watchdog API.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
'sirfsoc_wdt_of_match' is always compiled in. Hence the
helper macro is not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This patch is being submitted to output a general string when the panic comes
in that informs the user of the possible places to look for the source of the
NMI. Because various systems log the message in different places this would
give a single display of where to go look instead of code that acts on all
these different server names or IDs.
Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
There is nothing ARM specific in this driver, and we intend to use it on the
Xtensa architecture. Also, clk.h now includes stubs for !CONFIG_HAVE_CLK, so
the driver should build anyway.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
We should set watchdog timer to be disabled in low power mode,
as there is no service running in background, otherwise, system
will reset unexpected.
Signed-off-by: Anson Huang <b20788@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
A good watchdog driver is supposed to report when it was responsible
for resetting the system. Implement this for the s3c2410, at least on
exynos5250 and exynos5420 where we already have a pointer to the PMU
registers to read the information.
Note that exynos4 SoCs also provide the reset status, but providing
that is left as an exercise for future changes and is not plumbed up
in this patch series. Also note the exynos4 SoCs don't appear to need
any PMU config, which is why this patch separates the concepts of
having PMU Registers vs. needing PMU Config.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add device tree support for exynos5250 and 5420 SoCs and use syscon regmap interface
to configure AUTOMATIC_WDT_RESET_DISABLE and MASK_WDT_RESET_REQUEST registers of PMU
to mask/unmask enable/disable of watchdog in probe and s2r scenarios.
Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The existing watchdog timeout worked OK but didn't deal with
rounding in an ideal way when dividing out all of its clocks.
Specifically if you had a timeout of 32 seconds and an input clock of
66666666, you'd end up setting a timeout of 31.9998 seconds and
reporting a timeout of 31 seconds.
Specifically DBG printouts showed:
s3c2410wdt_set_heartbeat: count=16666656, timeout=32, freq=520833
s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666656 (0000ff4f)
and the final timeout reported to the user was:
((count / divisor) * divisor) / freq
(0xff4f * 255) / 520833 = 31 (truncated from 31.9998)
the technically "correct" value is:
(0xff4f * 255) / (66666666.0 / 128) = 31.9998
By using "DIV_ROUND_UP" we can be a little more correct.
s3c2410wdt_set_heartbeat: count=16666688, timeout=32, freq=520834
s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666688 (0000ff50)
and the final timeout reported to the user:
(0xff50 * 255) / 520834 = 32
the technically "correct" value is:
(0xff50 * 255) / (66666666.0 / 128) = 32.0003
We'll use a DIV_ROUND_UP to solve this, generally erroring on the side
of reporting shorter values to the user and setting the watchdog to
slightly longer than requested:
* Round input frequency up to assume watchdog is counting faster.
* Round divisions by divisor up to give us extra time.
At the same time we can avoid a for loop by just doing the right math.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
On modern SoCs the watchdog timer is parented on a clock that doesn't
change every time we have a cpufreq change. That means we don't need
to constantly adjust the watchdog timer, so avoid registering for and
dealing with cpufreq transitions unless we've actually got
CONFIG_ARM_S3C24XX_CPUFREQ defined.
Note that this is more than just an optimization. The s3c2410
watchdog driver actually pats the watchdog on every CPU frequency
change. On modern systems these happen many times per second (even in
a system where "nothing" is happening). That effectively makes any
userspace watchdog program useless (the watchdog is constantly patted
by the kernel). If we need ARM_S3C24XX_CPUFREQ defined on a
multiplatform kernel we'll need to make sure that kernel supports
common clock and change this to user common clock framework.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
