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author | Pratyush Anand <panand@redhat.com> | 2015-12-17 17:53:59 +0530 |
---|---|---|
committer | Wim Van Sebroeck <wim@iguana.be> | 2015-12-27 16:55:57 +0100 |
commit | 33b711269ade3f6bc9d9d15e4343e6fa922d999b (patch) | |
tree | 24858dcb710a0dbcd3c992e136c5dc3ca8a5e744 /drivers/watchdog/watchdog_core.c | |
parent | 906d7a5cfeda508e7361f021605579a00cd82815 (diff) | |
download | op-kernel-dev-33b711269ade3f6bc9d9d15e4343e6fa922d999b.zip op-kernel-dev-33b711269ade3f6bc9d9d15e4343e6fa922d999b.tar.gz |
watchdog: Read device status through sysfs attributes
This patch adds following attributes to watchdog device's sysfs interface
to read its different status.
* state - reads whether device is active or not
* identity - reads Watchdog device's identity string.
* timeout - reads current timeout.
* timeleft - reads timeleft before watchdog generates a reset
* bootstatus - reads status of the watchdog device at boot
* status - reads watchdog device's internal status bits
* nowayout - reads whether nowayout feature was set or not
Testing with iTCO_wdt:
# cd /sys/class/watchdog/watchdog1/
# ls
bootstatus dev device identity nowayout power state
subsystem timeleft timeout uevent
# cat identity
iTCO_wdt
# cat timeout
30
# cat state
inactive
# echo > /dev/watchdog1
# cat timeleft
26
# cat state
active
# cat bootstatus
0
# cat nowayout
0
Signed-off-by: Pratyush Anand <panand@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
-rw-r--r-- | drivers/watchdog/watchdog_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 357d23c..551af04 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -249,7 +249,7 @@ static int __watchdog_register_device(struct watchdog_device *wdd) devno = wdd->cdev.dev; wdd->dev = device_create(watchdog_class, wdd->parent, devno, - NULL, "watchdog%d", wdd->id); + wdd, "watchdog%d", wdd->id); if (IS_ERR(wdd->dev)) { watchdog_dev_unregister(wdd); ida_simple_remove(&watchdog_ida, id); |