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 <[email protected]> --- 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
