From: Robin Gong <b38343@xxxxxxxxxxxxx>
Add set_pretimeout since our watchdog driver has those interfaces and
obviously, the new common watchdog framework didn't implement this
interface.
Signed-off-by: Robin Gong <b38343@xxxxxxxxxxxxx>
[vzapolskiy: rebased, added an inline comment to describe new interface]
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
---
Changes from v2 to v3:
* none, new change
Changes from v1 to v2:
* none, new change
include/linux/watchdog.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h
index 51732d6..e3d23d3 100644
--- a/include/linux/watchdog.h
+++ b/include/linux/watchdog.h
@@ -28,6 +28,7 @@ struct watchdog_core_data;
* @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 (in seconds).
+ * @set_pretimeout:The routine for setting the watchdog devices pretimeout (in seconds).
* @get_timeleft:The routine that gets the time left before a reset (in seconds).
* @restart: The routine for restarting the machine.
* @ioctl: The routines that handles extra ioctl calls.
@@ -46,6 +47,7 @@ struct watchdog_ops {
int (*ping)(struct watchdog_device *);
unsigned int (*status)(struct watchdog_device *);
int (*set_timeout)(struct watchdog_device *, unsigned int);
+ int (*set_pretimeout)(struct watchdog_device *, unsigned int);
unsigned int (*get_timeleft)(struct watchdog_device *);
int (*restart)(struct watchdog_device *, unsigned long, void *);
long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long);
@@ -95,6 +97,7 @@ struct watchdog_device {
const struct watchdog_ops *ops;
unsigned int bootstatus;
unsigned int timeout;
+ unsigned int pretimeout;
unsigned int min_timeout;
unsigned int max_timeout;
unsigned int min_hw_heartbeat_ms;
@@ -162,6 +165,13 @@ static inline bool watchdog_timeout_invalid(struct watchdog_device *wdd, unsigne
t > wdd->max_timeout);
}
+/* Use the following function to check if a pretimeout value is invalid */
+static inline bool watchdog_pretimeout_invalid(struct watchdog_device *wdd,
+ unsigned int t)
+{
+ return wdd->timeout && t >= wdd->timeout;
+}
+
/* Use the following functions to manipulate watchdog driver specific data */
static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data)
{
--
2.5.0
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