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-rw-r--r--drivers/watchdog/da9063_wdt.c17
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);