diff options
Diffstat (limited to 'drivers/watchdog/watchdog_dev.c')
| -rw-r--r-- | drivers/watchdog/watchdog_dev.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 4b381a6be2ff..d2d0b5e37a35 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -49,6 +49,7 @@ #include <linux/uaccess.h> /* For copy_to_user/put_user/... */ #include "watchdog_core.h" +#include "watchdog_pretimeout.h" /* * struct watchdog_core_data - watchdog core internal data @@ -488,6 +489,16 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(state); +static ssize_t pretimeout_governor_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct watchdog_device *wdd = dev_get_drvdata(dev); + + return watchdog_pretimeout_governor_get(wdd, buf); +} +static DEVICE_ATTR_RO(pretimeout_governor); + static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr, int n) { @@ -500,6 +511,10 @@ static umode_t wdt_is_visible(struct kobject *kobj, struct attribute *attr, else if (attr == &dev_attr_pretimeout.attr && !(wdd->info->options & WDIOF_PRETIMEOUT)) mode = 0; + else if (attr == &dev_attr_pretimeout_governor.attr && + (!(wdd->info->options & WDIOF_PRETIMEOUT) || + !IS_ENABLED(CONFIG_WATCHDOG_PRETIMEOUT_GOV))) + mode = 0; return mode; } @@ -512,6 +527,7 @@ static struct attribute *wdt_attrs[] = { &dev_attr_bootstatus.attr, &dev_attr_status.attr, &dev_attr_nowayout.attr, + &dev_attr_pretimeout_governor.attr, NULL, }; @@ -989,6 +1005,12 @@ int watchdog_dev_register(struct watchdog_device *wdd) return PTR_ERR(dev); } + ret = watchdog_register_pretimeout(wdd); + if (ret) { + device_destroy(&watchdog_class, devno); + watchdog_cdev_unregister(wdd); + } + return ret; } @@ -1002,6 +1024,7 @@ int watchdog_dev_register(struct watchdog_device *wdd) void watchdog_dev_unregister(struct watchdog_device *wdd) { + watchdog_unregister_pretimeout(wdd); device_destroy(&watchdog_class, wdd->wd_data->cdev.dev); watchdog_cdev_unregister(wdd); } |