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Ahmad Fatoum 82ac16572b watchdog: f71808e_wdt: clear watchdog timeout occurred flag 
commit 4f39d575844148fbf3081571a1f3b4ae04150958 upstream.

The flag indicating a watchdog timeout having occurred normally persists
till Power-On Reset of the Fintek Super I/O chip. The user can clear it
by writing a `1' to the bit.

The driver doesn't offer a restart method, so regular system reboot
might not reset the Super I/O and if the watchdog isn't enabled, we
won't touch the register containing the bit on the next boot.
In this case all subsequent regular reboots will be wrongly flagged
by the driver as being caused by the watchdog.

Fix this by having the flag cleared after read. This is also done by
other drivers like those for the i6300esb and mpc8xxx_wdt.

Fixes: b97cb21a4634 ("watchdog: f71808e_wdt: Fix WDTMOUT_STS register read")
Cc: stable@vger.kernel.org
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200611191750.28096-5-a.fatoum@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-21 11:02:09 +02:00
..
acquirewdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
advantechwdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
alim1535_wdt.c
…
alim7101_wdt.c
watchdog: alim7101: register restart handler with kernel restart handler
2014-09-26 00:00:32 -07:00
ar7_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
asm9260_wdt.c
watchdog-asm9260: Delete owner assignment
2016-09-23 22:35:45 +02:00
aspeed_wdt.c
watchdog: Add Aspeed watchdog driver
2016-07-17 20:59:10 +02:00
at32ap700x_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
at91rm9200_wdt.c
Merge git://www.linux-watchdog.org/linux-watchdog
2015-09-11 15:12:59 -07:00
at91sam9_wdt.c
watchdog: at91sam9: get and use slow clock
2015-09-09 21:38:52 +02:00
at91sam9_wdt.h
watchdog: add a driver to support SAMA5D4 watchdog timer
2015-09-09 21:38:29 +02:00
ath79_wdt.c
mips: separate extable.h, switch module.h to it
2016-10-05 18:36:18 -04:00
atlas7_wdt.c
watchdog: atlas7_wdt: test clock rate to avoid division by 0
2016-03-16 21:09:08 +01:00
bcm47xx_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
bcm63xx_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
bcm2835_wdt.c
watchdog: bcm2835_wdt: Fix module autoload
2019-09-06 10:19:43 +02:00
bcm7038_wdt.c
watchdog: constify watchdog_ops structures
2016-09-24 08:50:10 +02:00
bcm_kona_wdt.c
watchdog: bcm281xx: Fix use of uninitialized spinlock.
2017-07-05 14:40:28 +02:00
bfin_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
booke_wdt.c
watchdog: booke_wdt: Use infrastructure to check timeout limits
2015-09-09 21:34:34 +02:00
cadence_wdt.c
watchdog: constify watchdog_ops structures
2016-09-24 08:50:10 +02:00
coh901327_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
cpu5wdt.c
…
cpwd.c
watchdog: cpwd: Use setup_timer()
2016-05-14 18:25:49 +02:00
da9052_wdt.c
watchdog: da9052_wdt: Drop reference counting
2015-12-29 20:36:03 +01:00
da9055_wdt.c
watchdog: da9055_wdt: Drop reference counting
2015-12-29 20:36:04 +01:00
da9062_wdt.c
watchdog: da9062: No need to ping manually before setting timeout
2020-06-30 15:38:26 -04:00
da9063_wdt.c
watchdog: da9063_wdt: don't trigger watchdog too fast
2016-07-17 21:02:42 +02:00
davinci_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
diag288_wdt.c
watchdog: diag288: Stop re-using watchdog core internal flags
2015-12-29 20:36:02 +01:00
digicolor_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
dw_wdt.c
watchdog: dw_wdt: Read clock rate only once and validate it
2016-09-23 08:40:55 +02:00
ebc-c384_wdt.c
watchdog: ebc-c384_wdt: Utilize the ISA bus driver
2016-05-02 09:32:04 -07:00
ep93xx_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
eurotechwdt.c
…
f71808e_wdt.c
watchdog: f71808e_wdt: clear watchdog timeout occurred flag
2020-08-21 11:02:09 +02:00
gef_wdt.c
watchdog: Fix module autoload for OF platform driver
2015-09-28 10:56:01 +02:00
geodewdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
gpio_wdt.c
watchdog: gpio_wdt: Fix missing platform_set_drvdata() in gpio_wdt_probe()
2016-07-27 10:47:43 +02:00
hpwdt.c
watchdog: hpwdt: Remove legacy NMI sourcing.
2018-03-18 11:18:53 +01:00
i6300esb.c
…
ib700wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
ibmasr.c
…
ie6xx_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
imgpdc_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
imx2_wdt.c
watchdog: imx2_wdt: fix min() calculation in imx2_wdt_set_timeout
2019-10-17 13:42:07 -07:00
indydog.c
…
intel_scu_watchdog.c
…
intel_scu_watchdog.h
…
intel-mid_wdt.c
watchdog: intel-mid: add Magic Closure flag
2015-10-28 22:58:32 +01:00
iop_wdt.c
…
it87_wdt.c
watchdog: it87_wdt: add IT8783 ID
2015-02-17 21:32:08 +01:00
it8712f_wdt.c
…
iTCO_vendor_support.c
…
iTCO_vendor.h
…
iTCO_wdt.c
watchdog: iTCO_wdt: constify iTCO_wdt_pm structure
2016-09-24 08:49:51 +02:00
ixp4xx_wdt.c
…
jz4740_wdt.c
watchdog: remove error message when unable to allocate watchdog device
2016-05-14 16:24:43 +02:00
Kconfig
watchdog: fix compile time error of pretimeout governors
2019-06-22 08:17:14 +02:00
kempld_wdt.c
watchdog: kempld: fix gcc-4.3 build
2017-10-21 17:21:33 +02:00
ks8695_wdt.c
char: make misc_deregister a void function
2015-08-05 10:35:49 -07:00
lantiq_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
lpc18xx_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
m54xx_wdt.c
…
machzwd.c
…
Makefile
Merge git://www.linux-watchdog.org/linux-watchdog
2016-10-13 16:44:20 -07:00
max63xx_wdt.c
watchdog: max63xx: make module's license marker match the header
2016-01-31 16:51:56 +01:00
max77620_wdt.c
watchdog: max77620: Add support for watchdog timer
2016-07-17 21:01:07 +02:00
mei_wdt.c
watchdog: mei_wdt: request stop on reboot to prevent false positive event
2017-01-06 10:40:16 +01:00
mena21_wdt.c
watchdog: mena21: Do not use device pointer from struct watchdog_device
2015-12-28 23:04:06 +01:00
menf21bmc_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
meson_gxbb_wdt.c
watchdog: meson: Fix the wrong value of left time
2019-12-05 15:34:10 +01:00
meson_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
mixcomwd.c
…
moxart_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
mpc8xxx_wdt.c
watchdog: mpc8xxx: use better error code when watchdog cannot be enabled
2015-09-09 21:37:51 +02:00
mt7621_wdt.c
watchdog: mt7621_wdt: Remove assignment of dev pointer
2016-09-24 08:59:31 +02:00
mtk_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
mtx-1_wdt.c
…
mv64x60_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
ni903x_wdt.c
watchdog: ni903x_wdt: Add NI 903x/913x watchdog driver
2016-03-01 16:25:39 +01:00
nuc900_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
nv_tco.c
watchdog: add support for MCP78S chipset in nv_tco
2016-07-17 21:04:13 +02:00
nv_tco.h
…
octeon-wdt-main.c
watchdog: octeon: Handle the FROZEN hot plug notifier actions.
2016-05-14 09:22:21 +02:00
octeon-wdt-nmi.S
…
of_xilinx_wdt.c
watchdog: xilinx: Add clock support
2016-09-23 22:04:09 +02:00
omap_wdt.c
watchdog: omap: don't disable the timer when it should be enabled early
2015-12-27 21:09:40 +01:00
omap_wdt.h
watchdog: omap_wdt: implement get_timeleft
2015-06-22 15:54:35 +02:00
orion_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
pc87413_wdt.c
…
pcwd_pci.c
…
pcwd_usb.c
watchdog: pcwd_usb: fix NULL-deref at probe
2017-05-25 15:44:30 +02:00
pcwd.c
watchdog: pcwd: Utilize the module_isa_driver macro
2016-07-17 20:59:23 +02:00
pic32-dmt.c
watchdog: pic32-dmt: Remove .owner field for driver
2016-07-25 12:02:32 +02:00
pic32-wdt.c
watchdog: pic32-wdt: Fix return value check in pic32_wdt_drv_probe()
2016-07-25 12:02:43 +02:00
pika_wdt.c
…
pnx833x_wdt.c
…
pnx4008_wdt.c
watchdog: pnx4008: restart: support "cmd" from userspace
2016-03-16 21:09:42 +01:00
pretimeout_noop.c
watchdog: pretimeout: add noop pretimeout governor
2016-10-08 10:27:13 +02:00
pretimeout_panic.c
watchdog: pretimeout: add panic pretimeout governor
2016-10-08 10:27:17 +02:00
qcom-wdt.c
watchdog: qcom: fix kernel panic due to external abort on non-linefetch
2017-01-06 10:40:16 +01:00
rc32434_wdt.c
watchdog: rc32434_wdt: fix ioctl error handling
2016-03-01 15:29:42 +01:00
rdc321x_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
renesas_wdt.c
watchdog: renesas-wdt: add driver
2016-05-14 18:15:40 +02:00
retu_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
riowd.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
rn5t618_wdt.c
watchdog: rn5t618_wdt: fix module aliases
2020-02-05 13:05:40 +00:00
rt2880_wdt.c
watchdog: rt2880_wdt: Remove assignment of dev pointer
2016-09-24 08:59:23 +02:00
s3c2410_wdt.c
watchdog: s3c2410: Fix infinite interrupt in soft mode
2017-04-12 12:41:22 +02:00
sa1100_wdt.c
…
sama5d4_wdt.c
watchdog: add a driver to support SAMA5D4 watchdog timer
2015-09-09 21:38:29 +02:00
sb_wdog.c
…
sbc60xxwdt.c
…
sbc7240_wdt.c
…
sbc8360.c
…
sbc_epx_c3.c
…
sbc_fitpc2_wdt.c
…
sbsa_gwdt.c
watchdog: sbsa: use 32-bit read for WCV
2018-05-30 07:50:34 +02:00
sc520_wdt.c
…
sc1200wdt.c
…
sch311x_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
scx200_wdt.c
…
shwdt.c
watchdog: shwdt: Use setup_timer()
2016-05-14 18:25:56 +02:00
sirfsoc_wdt.c
watchdog: sirf: fix __iomem * warnings
2016-07-17 21:00:44 +02:00
smsc37b787_wdt.c
…
softdog.c
watchdog: softdog: implement pretimeout support
2016-10-08 10:27:27 +02:00
sp805_wdt.c
watchdog: sp805: ping fails to abort wdt reset
2016-01-31 16:52:08 +01:00
sp5100_tco.c
watchdog: sp5100_tco: properly check for new register layouts
2016-05-14 16:16:04 +02:00
sp5100_tco.h
watchdog: sp5100_tco: Fix watchdog disable bit
2018-05-30 07:50:20 +02:00
st_lpc_wdt.c
watchdog: st_wdt: Remove support for obsolete platforms
2016-09-24 08:59:49 +02:00
stmp3xxx_rtc_wdt.c
watchdog: stmp3xxx: Remove unused variables
2016-01-11 21:51:28 +01:00
sun4v_wdt.c
Add sun4v_wdt watchdog driver
2016-01-31 11:06:24 -08:00
sunxi_wdt.c
watchdog: Add 'action' and 'data' parameters to restart handler callback
2016-03-01 15:36:35 +01:00
tangox_wdt.c
watchdog: tangox: Set max_hw_heartbeat_ms instead of max_timeout
2016-07-18 12:10:21 +02:00
tegra_wdt.c
watchdog: tegra: constify watchdog_ops structures
2016-09-24 08:50:03 +02:00
ts72xx_wdt.c
char: make misc_deregister a void function
2015-08-05 10:35:49 -07:00
ts4800_wdt.c
watchdog: ts4800: add driver for TS-4800 watchdog
2015-12-28 22:29:35 +01:00
twl4030_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
txx9wdt.c
watchdog: txx9wdt: Add missing clock (un)prepare calls for CCF
2016-09-23 22:36:32 +02:00
ux500_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
via_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
w83627hf_wdt.c
watchdog: constify watchdog_ops structures
2016-09-24 08:50:10 +02:00
w83877f_wdt.c
…
w83977f_wdt.c
watchdog: w83977f_wdt: underflow in wdt_set_timeout()
2015-11-23 08:59:30 +01:00
wafer5823wdt.c
…
watchdog_core.c
watchdog: core: Fix devres_alloc() allocation size
2016-09-23 08:37:14 +02:00
watchdog_core.h
watchdog: Create watchdog device in watchdog_dev.c
2015-12-29 20:36:01 +01:00
watchdog_dev.c
watchdog: Fix the race between the release of watchdog_core_data and cdev
2020-05-27 16:41:53 +02:00
watchdog_pretimeout.c
watchdog: pretimeout: add pretimeout_available_governors attribute
2016-10-08 10:27:24 +02:00
watchdog_pretimeout.h
watchdog: pretimeout: add pretimeout_available_governors attribute
2016-10-08 10:27:24 +02:00
wd501p.h
…
wdat_wdt.c
ACPI: watchdog: Fix gas->access_width usage
2020-03-11 07:53:06 +01:00
wdrtas.c
…
wdt285.c
…
wdt977.c
…
wdt_pci.c
…
wdt.c
…
wm831x_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
wm8350_wdt.c
Watchdog: Fix parent of watchdog_devices
2015-09-09 21:39:22 +02:00
xen_wdt.c
watchdog: drop owner assignment from platform_drivers
2014-10-20 16:21:56 +02:00
ziirave_wdt.c
watchdog: ziirave_wdt: Add support to upload the firmware.
2016-09-23 22:34:24 +02:00