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Ben Wolsieffer 490510e608 watchdog: stm32_iwdg: initialize default timeout 
[ Upstream commit dbd7c0088b7f44aa0b9276ed3449df075a7b5b54 ]

The driver never sets a default timeout value, therefore it is
initialized to zero. When CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED is
enabled, the watchdog is started during probe. The kernel is supposed to
automatically ping the watchdog from this point until userspace takes
over, but this does not happen if the configured timeout is zero. A zero
timeout causes watchdog_need_worker() to return false, so the heartbeat
worker does not run and the system therefore resets soon after the
driver is probed.

This patch fixes this by setting an arbitrary non-zero default timeout.
The default could be read from the hardware instead, but I didn't see
any reason to add this complexity.

This has been tested on an STM32F746.

Fixes: 85fdc63fe2 ("drivers: watchdog: stm32_iwdg: set WDOG_HW_RUNNING at probe")
Signed-off-by: Ben Wolsieffer <ben.wolsieffer@hefring.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240228182723.12855-1-ben.wolsieffer@hefring.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-03-26 18:20:02 -04:00
..
Kconfig linux-watchdog 6.6-rc1 tag 2023-09-06 09:19:12 -07:00
Makefile Watchdog: Add marvell GTI watchdog driver 2023-08-13 14:29:49 +02:00
acquirewdt.c watchdog: acquirewdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
advantech_ec_wdt.c watchdog: Add Advantech EC watchdog driver 2022-11-19 15:30:37 +01:00
advantechwdt.c watchdog: advantechwdt: Convert to platform remove callback returning void 2023-04-22 12:53:40 +02:00
alim1535_wdt.c
…
alim7101_wdt.c
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apple_wdt.c watchdog: apple: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
ar7_wdt.c watchdog: ar7: Convert to platform remove callback returning void 2023-04-22 12:53:41 +02:00
arm_smc_wdt.c
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armada_37xx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
asm9260_wdt.c
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aspeed_wdt.c watchdog: aspeed: Drop of_match_ptr for ID table 2023-04-22 12:53:59 +02:00
at91rm9200_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
at91sam9_wdt.c watchdog: at91sam9_wdt: use devm_request_irq to avoid missing free_irq() in error path 2023-02-18 15:11:35 +01:00
at91sam9_wdt.h
…
ath79_wdt.c watchdog: ath79: Convert to platform remove callback returning void 2023-04-22 12:53:42 +02:00
bcm47xx_wdt.c watchdog: bcm47xx: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
bcm2835_wdt.c watchdog: bcm2835_wdt: Fix WDIOC_SETTIMEOUT handling 2024-01-25 15:35:37 -08:00
bcm7038_wdt.c watchdog: bcm7038: Use devm_clk_get_enabled() helper 2023-02-12 15:32:51 +01:00
bcm_kona_wdt.c watchdog: bcm_kona: Convert to platform remove callback returning void 2023-04-22 12:53:43 +02:00
bd9576_wdt.c watchdog: bd9576_wdt: switch to using devm_fwnode_gpiod_get() 2022-10-02 12:55:30 +02:00
booke_wdt.c watchdog: booke_wdt: Replace PPC_FSL_BOOK3E by PPC_E500 2022-09-26 23:00:13 +10:00
cadence_wdt.c watchdog: cadence: Use devm_clk_get_enabled() helper 2023-02-12 15:32:49 +01:00
cpu5wdt.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
cpwd.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
da9052_wdt.c
…
da9055_wdt.c
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da9062_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
da9063_wdt.c watchdog: da9062: da9063: use unlocked xfer function in restart 2023-02-18 15:11:30 +01:00
davinci_wdt.c watchdog: davinci: Use devm_clk_get_enabled() helper 2023-02-12 15:32:50 +01:00
db8500_wdt.c watchdog: at91rm9200: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
diag288_wdt.c watchdog: diag288_wdt: unify lpar and zvm diag288 helpers 2023-02-06 15:14:10 +01:00
digicolor_wdt.c
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dw_wdt.c watchdog: dw_wdt: Simplify clk management 2023-04-29 08:08:41 +02:00
ebc-c384_wdt.c
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ep93xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
eurotechwdt.c watchdog: eurotechwdt: Remove redundant word in comments 2022-10-02 12:55:38 +02:00
exar_wdt.c drivers: watchdog: exar_wdt.c fix use after free 2022-10-19 19:49:47 +02:00
f71808e_wdt.c watchdog: f71808e_wdt: Add check for platform_driver_register 2022-07-23 14:18:46 +02:00
ftwdt010_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
gef_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
geodewdt.c watchdog: geodewdt: Convert to platform remove callback returning void 2023-04-22 12:53:44 +02:00
gpio_wdt.c
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gxp-wdt.c watchdog: gxp: Add missing MODULE_LICENSE 2022-06-09 12:20:34 +02:00
hpwdt.c watchdog/hpwdt: Only claim UNKNOWN NMI if from iLO 2024-01-25 15:35:37 -08:00
i6300esb.c
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iTCO_vendor.h
…
iTCO_vendor_support.c
…
iTCO_wdt.c watchdog: iTCO_wdt: Report firmware_version 2023-02-18 15:11:31 +01:00
ib700wdt.c watchdog: ib700wdt: Convert to platform remove callback returning void 2023-04-22 12:53:45 +02:00
ibmasr.c watchdog: ibmasr: Replace GPL license notice with SPDX identifier 2023-06-26 14:30:05 +02:00
ie6xx_wdt.c watchdog: ie6xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
imgpdc_wdt.c watchdog: imgpdc: Use devm_clk_get_enabled() helper 2023-02-12 15:32:48 +01:00
imx2_wdt.c watchdog: imx2_wdt: Improve dev_crit() message 2023-08-25 16:19:13 +02:00
imx7ulp_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
imx_sc_wdt.c watchdog: imx_sc_wdt: fix pretimeout 2021-06-21 08:49:14 +02:00
indydog.c
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intel-mid_wdt.c watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load 2023-08-19 17:36:19 +02:00
it87_wdt.c watchdog: it87_wdt: Keep WDTCTRL bit 3 unmodified for IT8784/IT8786 2024-02-05 20:14:29 +00:00
it8712f_wdt.c watchdog: it8712f_wdt: remove definition of DEBUG 2021-02-07 14:41:18 +01:00
ixp4xx_wdt.c watchdog: ixp4xx: Make sure restart always works 2023-11-20 11:59:34 +01:00
jz4740_wdt.c watchdog: jz4740: Fix return value check in jz4740_wdt_probe() 2021-06-21 08:49:11 +02:00
keembay_wdt.c watchdog: keembay: Typo corrections and other blank operations 2021-06-21 08:48:57 +02:00
kempld_wdt.c watchdog: kempld: Remove #ifdef guards for PM related functions 2022-11-19 15:30:39 +01:00
lantiq_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
loongson1_wdt.c watchdog: Enable COMPILE_TEST for more drivers 2023-08-13 14:29:51 +02:00
lpc18xx_wdt.c watchdog: lpc18xx: Convert to platform remove callback returning void 2023-04-22 12:53:46 +02:00
m54xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
machzwd.c watchdog: Fix fall-through warnings for Clang 2021-05-17 18:56:23 -05:00
marvell_gti_wdt.c watchdog: marvell_gti_wdt: Fix error code in probe() 2023-11-20 11:59:34 +01:00
max63xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
max77620_wdt.c watchdog: max77620: update Luca Ceresoli's e-mail address 2022-07-23 14:21:23 +02:00
mei_wdt.c mei: fix kdoc in the driver 2021-06-22 12:40:31 +02:00
mena21_wdt.c
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menf21bmc_wdt.c
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menz69_wdt.c watchdog: menz069_wdt: Remove redundant initialization owner in men_z069_driver 2023-08-13 14:29:48 +02:00
meson_gxbb_wdt.c watchdog: Add support for Amlogic-T7 SoCs 2023-08-25 16:19:15 +02:00
meson_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
mixcomwd.c
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mlx_wdt.c watchdog: mlx-wdt: Use regmap_write_bits() 2021-10-26 21:31:10 +02:00
moxart_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
mpc8xxx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
msc313e_wdt.c watchdog: msc313e: Check if the WDT was running at boot 2022-01-05 10:38:51 +01:00
mt7621_wdt.c watchdog: mt7621-wdt: avoid ralink architecture dependent code 2023-03-02 06:51:29 +01:00
mtk_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
mtx-1_wdt.c watchdog: mtx-1: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
ni903x_wdt.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
nic7018_wdt.c watchdog: nic7018: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
npcm_wdt.c watchdog: npcm: Enable clock if provided 2022-10-02 12:55:41 +02:00
nv_tco.c watchdog: nv_tco: Convert to platform remove callback returning void 2023-04-22 12:53:47 +02:00
nv_tco.h
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octeon-wdt-main.c linux-watchdog 5.14-rc1 tag 2021-07-07 12:57:46 -07:00
octeon-wdt-nmi.S watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
of_xilinx_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
omap_wdt.c watchdog: omap: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
omap_wdt.h
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orion_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
pc87413_wdt.c watchdog:Fix typo in comment 2022-07-23 14:21:28 +02:00
pcwd.c isa: Make the remove callback for isa drivers return void 2021-01-26 07:42:27 +01:00
pcwd_pci.c
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pcwd_usb.c watchdog: pcwd_usb: Fix attempting to access uninitialized memory 2023-02-18 15:11:39 +01:00
pic32-dmt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pic32-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pika_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
pm8916_wdt.c watchdog: pm8916_wdt: Remove redundant of_match_ptr() 2023-08-19 17:36:18 +02:00
pnx4008_wdt.c watchdog: pnx4008: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
pretimeout_noop.c
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pretimeout_panic.c
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pseries-wdt.c watchdog/pseries-wdt: initial support for H_WATCHDOG-based watchdog timers 2022-07-20 21:57:39 +10:00
qcom-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rave-sp-wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rc32434_wdt.c watchdog: rc32434: Convert to platform remove callback returning void 2023-04-22 12:53:48 +02:00
rdc321x_wdt.c watchdog: rdc321x: Convert to platform remove callback returning void 2023-04-22 12:53:49 +02:00
realtek_otto_wdt.c watchdog: realtek_otto: Use devm_clk_get_enabled() helper 2023-02-12 15:32:46 +01:00
renesas_wdt.c watchdog: renesas: Convert to platform remove callback returning void 2023-04-22 12:53:50 +02:00
retu_wdt.c watchdog: retu_wdt: Clean-up by using managed work init 2021-03-23 15:22:40 +01:00
riowd.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rn5t618_wdt.c watchdog: rn5t618: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:54 +02:00
rt2880_wdt.c watchdog: rt2880-wdt: prefer unsigned int over unsigned 2023-04-22 12:53:57 +02:00
rtd119x_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
rti_wdt.c watchdog: rti_wdt: Drop runtime pm reference count when watchdog is unused 2024-01-25 15:35:37 -08:00
rza_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rzg2l_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
rzn1_wdt.c watchdog: rzn1: Use devm_clk_get_enabled() helper 2023-02-12 15:32:52 +01:00
s3c2410_wdt.c watchdog: s3c2410: Fix potential deadlock on &wdt->lock 2023-08-19 17:14:37 +02:00
sa1100_wdt.c watchdog: sa1100: Convert to platform remove callback returning void 2023-04-22 12:53:51 +02:00
sama5d4_wdt.c watchdog: sama5d4: readout initial state 2023-08-19 17:36:20 +02:00
sb_wdog.c
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sbc60xxwdt.c watchdog: Fix possible use-after-free in wdt_startup() 2021-06-21 08:48:59 +02:00
sbc7240_wdt.c
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sbc8360.c
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sbc_epx_c3.c
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sbc_fitpc2_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
sbsa_gwdt.c sbsa_gwdt: Calculate timeout with 64-bit math 2023-11-28 17:20:11 +00:00
sc520_wdt.c watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() 2021-06-21 08:49:02 +02:00
sc1200wdt.c
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sch311x_wdt.c watchdog: sch311x: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
scx200_wdt.c
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shwdt.c watchdog: shwdt: Convert to platform remove callback returning void 2023-04-22 12:53:52 +02:00
simatic-ipc-wdt.c watchdog: simatic-ipc-wdt: make IO region access of one model muxed 2023-07-14 12:45:01 +02:00
sl28cpld_wdt.c watchdog: sl28cpld_wdt: Constify static struct watchdog_ops 2021-08-22 10:28:09 +02:00
smsc37b787_wdt.c
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softdog.c
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sp805_wdt.c watchdog: sp805_wdt: fix spelling typo in comment 2022-10-19 19:49:46 +02:00
sp5100_tco.c watchdog: sp5100_tco: support Hygon FCH/SCH (Server Controller Hub) 2023-06-26 14:30:07 +02:00
sp5100_tco.h Watchdog: sp5100_tco: Enable Family 17h+ CPUs 2022-03-27 17:04:33 +02:00
sprd_wdt.c watchdog: sprd: change to use usleep_range() instead of busy loop 2020-12-13 16:17:39 +01:00
st_lpc_wdt.c watchdog: st_lpc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
starfive-wdt.c watchdog: starfive: Check pm_runtime_enabled() before decrementing usage counter 2024-03-26 18:20:02 -04:00
stm32_iwdg.c watchdog: stm32_iwdg: initialize default timeout 2024-03-26 18:20:02 -04:00
stmp3xxx_rtc_wdt.c watchdog: stmp3xxx_rtc: Convert to platform remove callback returning void 2023-04-22 12:53:53 +02:00
stpmic1_wdt.c
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sun4v_wdt.c
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sunplus_wdt.c watchdog: Add watchdog driver for Sunplus SP7021 2022-05-08 10:34:05 +02:00
sunxi_wdt.c watchdog: Explicitly include correct DT includes 2023-08-13 14:29:49 +02:00
tegra_wdt.c watchdog: tegra_wdt: Remove #ifdef guards for PM related functions 2022-07-23 14:21:27 +02:00
tqmx86_wdt.c watchdog: tqmx86: Constify static struct watchdog_ops 2021-08-22 10:28:10 +02:00
ts72xx_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
ts4800_wdt.c watchdog: Convert GPL 2.0 notice to SPDX identifier 2023-06-26 14:30:04 +02:00
twl4030_wdt.c watchdog: twl4030: Remove #ifdef guards for PM related functions 2022-11-19 15:30:38 +01:00
txx9wdt.c
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uniphier_wdt.c
…
via_wdt.c
…
visconti_wdt.c watchdog: visconti: Use devm_clk_get_enabled() helper 2023-02-12 15:32:53 +01:00
w83627hf_wdt.c watchdog: w83627hf_wdt: add bootstatus support 2022-10-02 12:55:34 +02:00
w83877f_wdt.c watchdog: Fix possible use-after-free by calling del_timer_sync() 2021-06-21 08:49:03 +02:00
w83977f_wdt.c watchdog: w83977f_wdt: Fix comment typo 2022-10-02 12:55:39 +02:00
wafer5823wdt.c
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watchdog_core.c watchdog: core: stop watchdog when executing poweroff command 2023-08-19 17:36:19 +02:00
watchdog_core.h watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_dev.c watchdog: set cdev owner before adding 2024-01-25 15:35:37 -08:00
watchdog_hrtimer_pretimeout.c watchdog: Add hrtimer-based pretimeout feature 2021-06-21 08:49:13 +02:00
watchdog_pretimeout.c watchdog: avoid usage of iterator after loop 2023-04-22 12:54:00 +02:00
watchdog_pretimeout.h
…
wd501p.h
…
wdat_wdt.c watchdog: wdat_wdt: Avoid unimplemented get_timeleft 2023-02-12 15:32:53 +01:00
wdrtas.c
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wdt.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wdt285.c ARM: footbridge: remove CATS 2023-01-10 23:10:27 +01:00
wdt977.c
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wdt_pci.c watchdog: fix syntactic kernel-doc issues 2021-06-21 08:49:09 +02:00
wm831x_wdt.c
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wm8350_wdt.c watchdog: wm8350: Simplify using devm_watchdog_register_device() 2023-04-22 12:53:55 +02:00
xen_wdt.c
…
xilinx_wwdt.c watchdog: xilinx_wwdt: Use div_u64() in xilinx_wwdt_start() 2023-08-19 17:36:18 +02:00
ziirave_wdt.c watchdog: ziirave_wdt: Switch i2c driver back to use .probe() 2023-06-26 14:30:05 +02:00