diff options
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/da9063_wdt.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/watchdog/da9063_wdt.c b/drivers/watchdog/da9063_wdt.c index c1216e61e64e..6b0092b7d5a6 100644 --- a/drivers/watchdog/da9063_wdt.c +++ b/drivers/watchdog/da9063_wdt.c @@ -121,10 +121,23 @@ static int da9063_wdt_set_timeout(struct watchdog_device *wdd, { struct da9063 *da9063 = watchdog_get_drvdata(wdd); unsigned int selector; - int ret; + int ret = 0; selector = da9063_wdt_timeout_to_sel(timeout); - ret = _da9063_wdt_set_timeout(da9063, selector); + + /* + * There are two cases when a set_timeout() will be called: + * 1. The watchdog is off and someone wants to set the timeout for the + * further use. + * 2. The watchdog is already running and a new timeout value should be + * set. + * + * The watchdog can't store a timeout value not equal zero without + * enabling the watchdog, so the timeout must be buffered by the driver. + */ + if (watchdog_active(wdd)) + ret = _da9063_wdt_set_timeout(da9063, selector); + if (ret) dev_err(da9063->dev, "Failed to set watchdog timeout (err = %d)\n", ret); |