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watchdog: imx_sc_wdt: Fix reboot on crash

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commit e56d48e92b1017b6a8dbe64923a889283733fd96 upstream.

Currently when running the samples/watchdog/watchdog-simple.c
application and forcing a kernel crash by doing:

# ./watchdog-simple &
# echo c > /proc/sysrq-trigger

The system does not reboot as expected.

Fix it by calling imx_sc_wdt_set_timeout() to configure the i.MX8QXP
watchdog with a proper timeout.

Cc: <[email protected]>
Fixes: 986857acbc ("watchdog: imx_sc: Add i.MX system controller watchdog support")
Reported-by: Breno Lima <[email protected]>
Signed-off-by: Fabio Estevam <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Tested-by: Breno Lima <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Fabio Estevam 2020-04-12 20:01:22 -03:00 • committed by Greg Kroah-Hartman
commit f7d57ba8d7
1 changed files with 5 additions and 0 deletions
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5
drivers/watchdog/imx_sc_wdt.c
View file

@ -177,6 +177,11 @@ static int imx_sc_wdt_probe(struct platform_device *pdev)
wdog->timeout = DEFAULT_TIMEOUT;
watchdog_init_timeout(wdog, 0, dev);
ret = imx_sc_wdt_set_timeout(wdog, wdog->timeout);
if (ret)
return ret;
watchdog_stop_on_reboot(wdog);
watchdog_stop_on_unregister(wdog);