path: root/Documentation/watchdog
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authorWim Van Sebroeck <wim@iguana.be>2011-07-22 18:58:54 +0000
committerWim Van Sebroeck <wim@iguana.be>2011-07-28 08:01:12 +0000
commit017cf0805105496ab1880e236cb3e4bf156fb915 (patch)
treef6889e009ddba78c5c5d1965d0dae77f4fb5edd8 /Documentation/watchdog
parent014d694e5d59e4219803cd14deaae496d86e4910 (diff)
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>
Diffstat (limited to 'Documentation/watchdog')
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt
index acdee39fb08..41d552698ad 100644
--- a/Documentation/watchdog/watchdog-kernel-api.txt
+++ b/Documentation/watchdog/watchdog-kernel-api.txt
@@ -127,6 +127,13 @@ bit-operations. The status bits that are defined are:
* WDOG_DEV_OPEN: this status bit shows whether or not the watchdog device
was opened via /dev/watchdog.
(This bit should only be used by the WatchDog Timer Driver Core).
+* WDOG_ALLOW_RELEASE: this bit stores whether or not the magic close character
+ has been sent (so that we can support the magic close feature).
+ (This bit should only be used by the WatchDog Timer Driver Core).
+Note: The WatchDog Timer Driver Core supports the magic close feature. To use
+the magic close feature you must set the WDIOF_MAGICCLOSE bit in the options
+field of the watchdog's info structure.
To get or set driver specific data the following two helper functions should be