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 <xiaofeng.wei@xxxxxxx>
---
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
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