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authorPratyush Anand <panand@redhat.com>2015-12-17 17:53:59 +0530
committerWim Van Sebroeck <wim@iguana.be>2015-12-27 16:55:57 +0100
commit33b711269ade3f6bc9d9d15e4343e6fa922d999b (patch)
tree24858dcb710a0dbcd3c992e136c5dc3ca8a5e744 /drivers/watchdog/watchdog_core.c
parent906d7a5cfeda508e7361f021605579a00cd82815 (diff)
downloadlinux-33b711269ade3f6bc9d9d15e4343e6fa922d999b.tar.bz2
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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
index 357d23c79545..551af042867c 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);