A watchdog timer exception also occurs if the selected time base bit transitions from 0 to 1 due to an mtspr that writes a 1 to the bit when its previous value was 0.
Signed-off-by: Xiaofeng Wei <[email protected]> --- drivers/watchdog/booke_wdt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c index 3ad1e44..70e742c 100644 --- a/drivers/watchdog/booke_wdt.c +++ b/drivers/watchdog/booke_wdt.c @@ -186,9 +186,15 @@ static int booke_wdt_stop(struct watchdog_device *wdog) static int booke_wdt_set_timeout(struct watchdog_device *wdt_dev, unsigned int timeout) { + if (watchdog_active(wdt_dev)) + on_each_cpu(__booke_wdt_disable, NULL, 0); + wdt_dev->timeout = timeout; booke_wdt_set(wdt_dev); + if (watchdog_active(wdt_dev)) + on_each_cpu(__booke_wdt_enable, wdt_dev, 0); + return 0; } -- 2.9.3
