diff options
| author |   Jack Mitchell <ml@embed.me.uk> | 2020-01-07 15:51:55 +0000 |
|---|---|---|
| committer |   Wim Van Sebroeck <wim@linux-watchdog.org> | 2020-01-27 15:55:46 +0100 |
| commit | e7046df873548bfc87c0c594ca473226c5d3317b (patch) | |
| tree | f2ad51834ce31d7a6185054ad98660ce69d8b24a /drivers/watchdog | |
| parent | watchdog: fix UAF in reboot notifier handling in watchdog core code (diff) | |
| download | linux-dev-e7046df873548bfc87c0c594ca473226c5d3317b.tar.xz linux-dev-e7046df873548bfc87c0c594ca473226c5d3317b.zip | |
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 <ml@embed.me.uk>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200107155155.278521-1-ml@embed.me.uk
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/dw_wdt.c | 1 |
1 files changed, 1 insertions, 0 deletions
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; |