watchdog: Add support for dynamically allocated watchdog_device structs

[karo-tx-linux.git] / include / linux / watchdog.h

diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index da1dc1b52744c7d867625c92a9acdcff8ec082dd..da70f0facd2b77215e79860e5af8104da30b03a2 100644 (file)
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -71,6 +71,8 @@ struct watchdog_device;
  * @status:    The routine that shows the status of the watchdog device.
  * @set_timeout:The routine for setting the watchdog devices timeout value.
  * @get_timeleft:The routine that get's the time that's left before a reset.
+ * @ref:       The ref operation for dyn. allocated watchdog_device structs
+ * @unref:     The unref operation for dyn. allocated watchdog_device structs
  * @ioctl:     The routines that handles extra ioctl calls.
  *
  * The watchdog_ops structure contains a list of low-level operations
@@ -88,6 +90,8 @@ struct watchdog_ops {
        unsigned int (*status)(struct watchdog_device *);
        int (*set_timeout)(struct watchdog_device *, unsigned int);
        unsigned int (*get_timeleft)(struct watchdog_device *);
+       void (*ref)(struct watchdog_device *);
+       void (*unref)(struct watchdog_device *);
        long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long);
 };
 
@@ -135,6 +139,7 @@ struct watchdog_device {
 #define WDOG_DEV_OPEN          1       /* Opened via /dev/watchdog ? */
 #define WDOG_ALLOW_RELEASE     2       /* Did we receive the magic char ? */
 #define WDOG_NO_WAY_OUT                3       /* Is 'nowayout' feature set ? */
+#define WDOG_UNREGISTERED      4       /* Has the device been unregistered */
 };
 
 #ifdef CONFIG_WATCHDOG_NOWAYOUT