Add the function watchdog_is_open to check whether or not
the /dev/watchdog? is opened
Signed-off-by: Wenyou Yang <wenyou.yang@xxxxxxxxx>
Cc: wim@xxxxxxxxx
Cc: linux-watchdog@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
include/linux/watchdog.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index e40cc2b..7ea4465 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -111,6 +111,14 @@ static inline bool watchdog_active(struct watchdog_device *wdd)
return test_bit(WDOG_ACTIVE, &wdd->status);
}
+/* Use the following function to check whether or not
+ * the /dev/watchdog? is opened
+ */
+static inline bool watchdog_is_open(struct watchdog_device *wddev)
+{
+ return test_bit(WDOG_DEV_OPEN, &wddev->status);
+}
+
/* Use the following function to set the nowayout feature */
static inline void watchdog_set_nowayout(struct watchdog_device *wdd, bool nowayout)
{
--
1.7.9.5
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