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linux/drivers/watchdog
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Marc van der Wal 0bcd0b6a47 watchdog: it87_wdt: Work around non-working CIR interrupts 
On some hardware platforms, the it87_wdt watchdog resets the machine
despite the watchdog daemon running and writing to /dev/watchdog.

This is due to Consumer IR buffer underrun interrupts being used as
triggers to reset the timer.  On some buggy hardware implementations
such as the iEi AFL-12A-N270 single-board computer, this method does
not work.

However, resetting the timer by writing its original timeout value in
its configuration register over and over again suppresses the unwanted
reboots.

Add a module option (nocir), 0 by default in order not to break existing
setups.  Setting it to 1 enables the workaround.

Fixes bug #42801 <https://bugzilla.kernel.org/show_bug.cgi?id=42801>.
Tested primarily on Linux 3.5.7, applies cleanly on Linux 3.13.5.

Signed-off-by: Marc van der Wal <x0r+kernel@x0r.fr>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31 13:33:55 +02:00
..
acquirewdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
advantechwdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
alim1535_wdt.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
alim7101_wdt.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
ar7_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
at32ap700x_wdt.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
at91rm9200_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
at91sam9_wdt.c
watchdog: at91sam9_wdt: increase security margin on watchdog counter reset
2014-01-28 21:34:55 +01:00
at91sam9_wdt.h
ARM: at91: make watchdog drivers soc independent
2011-11-28 22:50:39 +08:00
ath79_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
bcm47xx_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
bcm63xx_wdt.c
watchdog: bcm63xx_wdt: Remove unused field from bcm63xx_wdt_device
2014-03-31 13:26:04 +02:00
bcm2835_wdt.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
bcm_kona_wdt.c
watchdog: bcm281xx: Debugfs support
2014-01-28 21:17:53 +01:00
bfin_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
booke_wdt.c
powerpc/watchdog: Don't enable interrupt on PPC64 BookE
2013-06-25 18:14:45 -05:00
coh901327_wdt.c
watchdog: coh901327: devicetree support
2013-05-31 11:25:52 +02:00
cpu5wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
cpwd.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
da9052_wdt.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
da9055_wdt.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
davinci_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
dw_wdt.c
watchdog: dw_wdt: remove build dependencies
2014-01-28 21:25:46 +01:00
ep93xx_wdt.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
eurotechwdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
f71808e_wdt.c
watchdog: f71808e_wdt: Add support for Jetway JNF99 motherboard
2012-07-23 12:46:38 +02:00
gef_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
geodewdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
gpio_wdt.c
watchdog: GPIO-controlled watchdog
2014-01-28 21:21:02 +01:00
hpwdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
i6300esb.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
ib700wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
ibmasr.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
ie6xx_wdt.c
watchdog: Drop unnecessary include of miscdevice.h
2013-12-10 08:48:09 +01:00
imx2_wdt.c
watchdog: imx2_wdt: disable watchdog timer during low power mode
2014-01-28 21:25:20 +01:00
indydog.c
watchdog: indydog: Simplify indydog_{start,stop}
2014-03-31 13:26:31 +02:00
intel_scu_watchdog.c
watchdog: intel_scu_watchdog: Remove unused variable
2014-03-31 13:26:56 +02:00
intel_scu_watchdog.h
watchdog: Use pr_<fmt> and pr_<level>
2012-03-27 19:59:26 +02:00
iop_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
it87_wdt.c
watchdog: it87_wdt: Work around non-working CIR interrupts
2014-03-31 13:33:55 +02:00
it8712f_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
iTCO_vendor_support.c
watchdog: Convert iTCO_wdt driver to mfd model
2012-05-09 17:20:09 +02:00
iTCO_vendor.h
watchdog: Convert iTCO_wdt driver to mfd model
2012-05-09 17:20:09 +02:00
iTCO_wdt.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
ixp4xx_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
jz4740_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
Kconfig
watchdog: bcm281xx: Fix Kconfig dependency
2014-03-31 13:33:36 +02:00
kempld_wdt.c
watchdog: Drop unnecessary include of miscdevice.h
2013-12-10 08:48:09 +01:00
ks8695_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
lantiq_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
m54xx_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
machzwd.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
Makefile
watchdog: Add tegra watchdog
2014-03-31 13:30:29 +02:00
max63xx_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
mena21_wdt.c
watchdog: New watchdog driver for MEN A21 watchdogs
2013-07-11 22:19:05 +02:00
mixcomwd.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
moxart_wdt.c
watchdog: mach-moxart: add restart handler
2014-01-28 21:27:32 +01:00
mpc8xxx_wdt.c
watchdog: mpc8xxx_wdt: MPC8xx is HW enabled
2014-03-31 13:21:33 +02:00
mtx-1_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
mv64x60_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
nuc900_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
nv_tco.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
nv_tco.h
watchdog: Add TCO support for nVidia chipsets
2011-01-12 13:51:23 +00:00
octeon-wdt-main.c
watchdog: nowayout is bool
2012-03-27 20:06:02 +02:00
octeon-wdt-nmi.S
WATCHDOG: Add watchdog driver for OCTEON SOCs
2010-08-05 13:26:22 +01:00
of_xilinx_wdt.c
watchdog: xilinx: Remove no_timeout variable
2014-03-31 13:29:31 +02:00
omap_wdt.c
watchdog: omap_wdt: Use devm_ioremap_resource()
2014-03-31 13:24:31 +02:00
omap_wdt.h
watchdog: cleanup spaces before tabs
2011-03-15 16:02:27 +00:00
orion_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
pc87413_wdt.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
pcwd_pci.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
pcwd_usb.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
pcwd.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
pika_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
pnx833x_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
pnx4008_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
rc32434_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
rdc321x_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
retu_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
riowd.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
rt2880_wdt.c
watchdog: Drop unnecessary include of miscdevice.h
2013-12-10 08:48:09 +01:00
s3c2410_wdt.c
watchdog: s3c2410_wdt: Check return value of clk_prepare_enable
2014-03-31 13:33:16 +02:00
sa1100_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sb_wdog.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sbc60xxwdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sbc7240_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sbc8360.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sbc_epx_c3.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sbc_fitpc2_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
sc520_wdt.c
watchdog: sc520_wdt: Remove unused variable
2014-03-31 13:27:34 +02:00
sc1200wdt.c
sc1200_wdt: Fix oops
2013-12-10 08:48:15 +01:00
sch311x_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
scx200_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
shwdt.c
watchdog: shwdt: Remove unused variable
2014-03-31 13:28:00 +02:00
sirfsoc_wdt.c
watchdog: sirf: Remove redundant of_match_ptr helper
2014-01-28 21:26:31 +01:00
smsc37b787_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
softdog.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
sp805_wdt.c
watchdog: sp805_wdt: Use devm_ioremap_resource()
2014-03-31 13:24:57 +02:00
sp5100_tco.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
sp5100_tco.h
watchdog: sp5100_tco: Set the AcpiMmioSel bitmask value to 1 instead of 2
2013-03-22 23:21:55 +01:00
stmp3xxx_rtc_wdt.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
sunxi_wdt.c
watchdog: sunxi: Change compatibles
2014-03-31 13:32:03 +02:00
tegra_wdt.c
watchdog: Add tegra watchdog
2014-03-31 13:30:29 +02:00
ts72xx_wdt.c
watchdog: ts72xx_wdt: make 'ts72xx_wdt_pdev' static
2014-03-31 13:23:46 +02:00
twl4030_wdt.c
watchdog: twl4030: Remove redundant platform_set_drvdata()
2013-07-11 21:10:13 +02:00
txx9wdt.c
watchdog: Drop unnecessary include of miscdevice.h
2013-12-10 08:48:09 +01:00
ux500_wdt.c
watchdog: Drop unnecessary include of miscdevice.h
2013-12-10 08:48:09 +01:00
via_wdt.c
watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
2014-01-28 19:07:07 +01:00
w83627hf_wdt.c
watchdog: w83627hf_wdt: Reset watchdog trigger during initialization
2014-01-28 21:35:40 +01:00
w83697hf_wdt.c
watchdog: fix checkpatch warnings and error
2014-03-31 13:31:06 +02:00
w83697ug_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
w83877f_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
w83977f_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
wafer5823wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
watchdog_core.c
watchdog: core: Make dt "timeout-sec" property work on drivers w/out min/max
2014-01-28 19:07:56 +01:00
watchdog_core.h
watchdog: Add multiple device support
2012-05-30 07:54:25 +02:00
watchdog_dev.c
watchdog: core: don't try to stop device if not running
2013-07-11 21:14:39 +02:00
wd501p.h
[WATCHDOG] More coding-style and trivial clean-up
2009-03-25 09:07:04 +00:00
wdrtas.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
wdt285.c
watchdog: wdt285: Fix variable type
2014-03-31 13:28:20 +02:00
wdt977.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
wdt_pci.c
watchdog: delete non-required instances of include <linux/init.h>
2014-03-31 13:22:45 +02:00
wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00
wm831x_wdt.c
watchdog: Remove unnecessary OOM messages
2014-03-31 13:23:19 +02:00
wm8350_wdt.c
watchdog: remove use of __devexit
2012-11-28 12:00:24 -08:00
xen_wdt.c
watchdog: Get rid of MODULE_ALIAS_MISCDEV statements
2013-11-17 19:38:13 +01:00