diff options
Diffstat (limited to 'drivers/watchdog/watchdog_dev.c')
-rw-r--r-- | drivers/watchdog/watchdog_dev.c | 55 |
1 files changed, 11 insertions, 44 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index ac76f36e447a..00bba772afbc 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -42,7 +42,6 @@ #include <linux/miscdevice.h> /* For handling misc devices */ #include <linux/module.h> /* For module stuff/... */ #include <linux/mutex.h> /* For mutexes */ -#include <linux/reboot.h> /* For reboot notifier */ #include <linux/slab.h> /* For memory functions */ #include <linux/types.h> /* For standard types (like size_t) */ #include <linux/watchdog.h> /* For watchdog specific items */ @@ -265,6 +264,7 @@ static int watchdog_start(struct watchdog_device *wdd) if (err == 0) { set_bit(WDOG_ACTIVE, &wdd->status); wd_data->last_keepalive = started_at; + wd_data->last_hw_keepalive = started_at; watchdog_update_worker(wdd); } @@ -947,6 +947,15 @@ static int watchdog_cdev_register(struct watchdog_device *wdd) if (IS_ERR_OR_NULL(watchdog_kworker)) return -ENODEV; + device_initialize(&wd_data->dev); + wd_data->dev.devt = MKDEV(MAJOR(watchdog_devt), wdd->id); + wd_data->dev.class = &watchdog_class; + wd_data->dev.parent = wdd->parent; + wd_data->dev.groups = wdd->groups; + wd_data->dev.release = watchdog_core_data_release; + dev_set_drvdata(&wd_data->dev, wdd); + dev_set_name(&wd_data->dev, "watchdog%d", wdd->id); + kthread_init_work(&wd_data->work, watchdog_ping_work); hrtimer_init(&wd_data->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); wd_data->timer.function = watchdog_timer_expired; @@ -967,15 +976,6 @@ static int watchdog_cdev_register(struct watchdog_device *wdd) } } - device_initialize(&wd_data->dev); - wd_data->dev.devt = MKDEV(MAJOR(watchdog_devt), wdd->id); - wd_data->dev.class = &watchdog_class; - wd_data->dev.parent = wdd->parent; - wd_data->dev.groups = wdd->groups; - wd_data->dev.release = watchdog_core_data_release; - dev_set_drvdata(&wd_data->dev, wdd); - dev_set_name(&wd_data->dev, "watchdog%d", wdd->id); - /* Fill in the data structures */ cdev_init(&wd_data->cdev, &watchdog_fops); @@ -1048,25 +1048,6 @@ static void watchdog_cdev_unregister(struct watchdog_device *wdd) put_device(&wd_data->dev); } -static int watchdog_reboot_notifier(struct notifier_block *nb, - unsigned long code, void *data) -{ - struct watchdog_device *wdd; - - wdd = container_of(nb, struct watchdog_device, reboot_nb); - if (code == SYS_DOWN || code == SYS_HALT) { - if (watchdog_active(wdd)) { - int ret; - - ret = wdd->ops->stop(wdd); - if (ret) - return NOTIFY_BAD; - } - } - - return NOTIFY_DONE; -} - /* * watchdog_dev_register: register a watchdog device * @wdd: watchdog device @@ -1085,22 +1066,8 @@ int watchdog_dev_register(struct watchdog_device *wdd) return ret; ret = watchdog_register_pretimeout(wdd); - if (ret) { + if (ret) watchdog_cdev_unregister(wdd); - return ret; - } - - if (test_bit(WDOG_STOP_ON_REBOOT, &wdd->status)) { - wdd->reboot_nb.notifier_call = watchdog_reboot_notifier; - - ret = devm_register_reboot_notifier(&wdd->wd_data->dev, - &wdd->reboot_nb); - if (ret) { - pr_err("watchdog%d: Cannot register reboot notifier (%d)\n", - wdd->id, ret); - watchdog_dev_unregister(wdd); - } - } return ret; } |