diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/ux500_wdt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/watchdog/ux500_wdt.c b/drivers/watchdog/ux500_wdt.c index 52747e59172..a1e8c2dbf10 100644 --- a/drivers/watchdog/ux500_wdt.c +++ b/drivers/watchdog/ux500_wdt.c @@ -44,6 +44,9 @@ static bool safe_close; static int ux500_wdt_open(struct inode *inode, struct file *file) { + if (!timeout) + return -ENODEV; + if (test_and_set_bit(WDT_FLAGS_OPEN, &wdt_flags)) return -EBUSY; |