From: Tero Kristo t-kristo@ti.com
[ Upstream commit 982bb70517aef2225bad1d802887b733db492cc0 ]
Currently the watchdog core does not initialize the last_hw_keepalive time during watchdog startup. This will cause the watchdog to be pinged immediately if enough time has passed from the system boot-up time, and some types of watchdogs like K3 RTI does not like this.
To avoid the issue, setup the last_hw_keepalive time during watchdog startup.
Signed-off-by: Tero Kristo t-kristo@ti.com Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20200302200426.6492-3-t-kristo@ti.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 --- drivers/watchdog/watchdog_dev.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 977fe74e5abe2..9e17d933ea941 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -237,6 +237,7 @@ static int watchdog_start(struct watchdog_device *wdd) if (err == 0) { set_bit(WDOG_ACTIVE, &wdd->status); wd_data->last_keepalive = started_at; + wd_data->last_hw_keepalive = started_at; watchdog_update_worker(wdd); }