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| author | Wim Van Sebroeck <wim@iguana.be> | 2011-07-22 22:58:54 +0400 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2011-07-28 12:01:12 +0400 |
| commit | 017cf0805105496ab1880e236cb3e4bf156fb915 (patch) | |
| tree | f6889e009ddba78c5c5d1965d0dae77f4fb5edd8 /Documentation/watchdog | |
| parent | 014d694e5d59e4219803cd14deaae496d86e4910 (diff) | |
| download | linux-017cf0805105496ab1880e236cb3e4bf156fb915.tar.xz | |
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')
| -rw-r--r-- | Documentation/watchdog/watchdog-kernel-api.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/watchdog/watchdog-kernel-api.txt b/Documentation/watchdog/watchdog-kernel-api.txt index acdee39fb08a..41d552698ada 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 used: |