On 4/12/20 4:01 PM, Fabio Estevam wrote:
> 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@xxxxxxxxxxxxxxx>
> Fixes: 986857acbc9a ("watchdog: imx_sc: Add i.MX system controller watchdog support")
> Reported-by: Breno Lima <breno.lima@xxxxxxx>
> Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/watchdog/imx_sc_wdt.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/watchdog/imx_sc_wdt.c b/drivers/watchdog/imx_sc_wdt.c
> index 60a32469f7de..e9ee22a7cb45 100644
> --- 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 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);
>
>
