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authorWim Van Sebroeck <wim@iguana.be>2011-07-22 18:59:49 +0000
committerWim Van Sebroeck <wim@iguana.be>2011-07-28 08:01:16 +0000
commit78d88fc01202b088573c962e2885556a5e99bf74 (patch)
tree8f5650e80988752d144c4575ae4d2b4e846e2aa5 /include/linux/watchdog.h
parent7e192b9c4234d29bdc20ac8d0a67edf7624b4206 (diff)
downloadop-kernel-dev-78d88fc01202b088573c962e2885556a5e99bf74.zip
op-kernel-dev-78d88fc01202b088573c962e2885556a5e99bf74.tar.gz
watchdog: WatchDog Timer Driver Core - Add ioctl call
Add support for extra ioctl calls by adding a ioctl watchdog operation. This operation will be called before we do our own handling of ioctl commands. This way we can override the internal ioctl command handling and we can also add extra ioctl commands. The ioctl watchdog operation should return the appropriate error codes or -ENOIOCTLCMD if the ioctl command should be handled through the internal ioctl handling of the 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 'include/linux/watchdog.h')
-rw-r--r--include/linux/watchdog.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index f719883..325d90b 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -70,6 +70,7 @@ struct watchdog_device;
* @ping: The routine that sends a keepalive ping to the watchdog device.
* @status: The routine that shows the status of the watchdog device.
* @set_timeout:The routine for setting the watchdog devices timeout value.
+ * @ioctl: The routines that handles extra ioctl calls.
*
* The watchdog_ops structure contains a list of low-level operations
* that control a watchdog device. It also contains the module that owns
@@ -85,6 +86,7 @@ struct watchdog_ops {
int (*ping)(struct watchdog_device *);
unsigned int (*status)(struct watchdog_device *);
int (*set_timeout)(struct watchdog_device *, unsigned int);
+ long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long);
};
/** struct watchdog_device - The structure that defines a watchdog device
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