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| author | Juerg Haefliger <juerg.haefliger@canonical.com> | 2021-05-11 08:29:53 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-06-21 08:49:02 +0200 |
| commit | 6ddf5087f8022847556a4fec1d37a613f7e395d5 (patch) | |
| tree | 0e190779b9667dc3ab244814c82af211c9e9c927 /drivers/watchdog | |
| parent | 3452239effed2b6ea25835f93bdb8a31f6829ffe (diff) | |
| download | linux-6ddf5087f8022847556a4fec1d37a613f7e395d5.tar.gz linux-6ddf5087f8022847556a4fec1d37a613f7e395d5.tar.bz2 linux-6ddf5087f8022847556a4fec1d37a613f7e395d5.zip | |
watchdog: Add {min,max}_timeout sysfs nodes
The valid range for the 'timeout' value is useful information so expose
the min and max timeout values via sysfs.
Signed-off-by: Juerg Haefliger <juergh@canonical.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210511062953.485252-1-juergh@canonical.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/watchdog_dev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 2946f3a63110..74070661d368 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -525,6 +525,24 @@ static ssize_t timeout_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(timeout); +static ssize_t min_timeout_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct watchdog_device *wdd = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%u\n", wdd->min_timeout); +} +static DEVICE_ATTR_RO(min_timeout); + +static ssize_t max_timeout_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct watchdog_device *wdd = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%u\n", wdd->max_timeout); +} +static DEVICE_ATTR_RO(max_timeout); + static ssize_t pretimeout_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -609,6 +627,8 @@ static struct attribute *wdt_attrs[] = { &dev_attr_state.attr, &dev_attr_identity.attr, &dev_attr_timeout.attr, + &dev_attr_min_timeout.attr, + &dev_attr_max_timeout.attr, &dev_attr_pretimeout.attr, &dev_attr_timeleft.attr, &dev_attr_bootstatus.attr, |