From: Fabio Estevam festevam@gmail.com
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: stable@vger.kernel.org Fixes: 986857acbc9a ("watchdog: imx_sc: Add i.MX system controller watchdog support") Reported-by: Breno Lima breno.lima@nxp.com Signed-off-by: Fabio Estevam festevam@gmail.com Reviewed-by: Guenter Roeck linux@roeck-us.net Tested-by: Breno Lima breno.lima@nxp.com Link: https://lore.kernel.org/r/20200412230122.5601-1-festevam@gmail.com 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
--- drivers/watchdog/imx_sc_wdt.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/watchdog/imx_sc_wdt.c +++ b/drivers/watchdog/imx_sc_wdt.c @@ -175,6 +175,11 @@ static int imx_sc_wdt_probe(struct platf 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);