The change allows for WDIOF_PRETIMEOUT capable watchdog devices to get
a configured pretimeout value over sysfs, the correspondent device
attribute name is "pretimeout".
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx>
---
Changes from v2 to v3:
* none, new change
Changes from v1 to v2:
* none, new change
drivers/watchdog/watchdog_dev.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 42ab86d..87bbae7 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -443,6 +443,15 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR_RO(state);
+static ssize_t pretimeout_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct watchdog_device *wdd = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", wdd->pretimeout);
+}
+static DEVICE_ATTR_RO(pretimeout);
+
static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr,
int n)
{
@@ -454,6 +463,9 @@ static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr,
mode = 0;
else if (attr == &dev_attr_timeleft.attr && !wdd->ops->get_timeleft)
mode = 0;
+ else if (attr == &dev_attr_pretimeout.attr &&
+ !(wdd->info->options & WDIOF_PRETIMEOUT))
+ mode = 0;
return mode;
}
@@ -465,6 +477,7 @@ static struct attribute *wdt_attrs[] = {
&dev_attr_bootstatus.attr,
&dev_attr_status.attr,
&dev_attr_nowayout.attr,
+ &dev_attr_pretimeout.attr,
NULL,
};
--
2.5.0
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