watchdog: WatchDog Timer Driver Core - Add Magic Close feature

Add support for the Magic Close feature to the
WatchDog Timer Driver Core framework.

Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index 9f33efe199d1..e9881ca2452b 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -112,6 +112,7 @@ struct watchdog_device {
 /* Bit numbers for status flags */
 #define WDOG_ACTIVE             0       /* Is the watchdog running/active */
 #define WDOG_DEV_OPEN           1       /* Opened via /dev/watchdog ? */
+#define WDOG_ALLOW_RELEASE      2       /* Did we receive the magic char ? */
 };
 
 /* Use the following functions to manipulate watchdog driver specific data */