From e7046df873548bfc87c0c594ca473226c5d3317b Mon Sep 17 00:00:00 2001 From: Jack Mitchell Date: Tue, 7 Jan 2020 15:51:55 +0000 Subject: [PATCH] watchdog: dw_wdt: ping watchdog to reset countdown before start Currently on an rk3288 SoC when trying to use the watchdog the SoC will instantly reset. This is due to the watchdog countdown counter being set to its initial value of 0x0. Reset the watchdog counter before start in order to correctly start the countdown timer from the right position. Signed-off-by: Jack Mitchell Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20200107155155.278521-1-ml@embed.me.uk Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/dw_wdt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c index 738eee5c8751..fba21de2bbad 100644 --- a/drivers/watchdog/dw_wdt.c +++ b/drivers/watchdog/dw_wdt.c @@ -143,6 +143,7 @@ static int dw_wdt_start(struct watchdog_device *wdd) struct dw_wdt *dw_wdt = to_dw_wdt(wdd); dw_wdt_set_timeout(wdd, wdd->timeout); + dw_wdt_ping(&dw_wdt->wdd); dw_wdt_arm_system_reset(dw_wdt); return 0;