watchdog: Switch to use hrtimer_setup()

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Patch was created by using Coccinelle.

Signed-off-by: Nam Cao <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]

drivers/watchdog/softdog.c

···
 	watchdog_set_nowayout(&softdog_dev, nowayout);
 	watchdog_stop_on_reboot(&softdog_dev);
 
-	hrtimer_init(&softdog_ticktock, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	softdog_ticktock.function = softdog_fire;
+	hrtimer_setup(&softdog_ticktock, softdog_fire, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 
 	if (IS_ENABLED(CONFIG_SOFT_WATCHDOG_PRETIMEOUT)) {
 		softdog_info.options |= WDIOF_PRETIMEOUT;
-		hrtimer_init(&softdog_preticktock, CLOCK_MONOTONIC,
-			     HRTIMER_MODE_REL);
-		softdog_preticktock.function = softdog_pretimeout;
+		hrtimer_setup(&softdog_preticktock, softdog_pretimeout, CLOCK_MONOTONIC,
+			      HRTIMER_MODE_REL);
 	}
 
 	if (soft_active_on_boot)

drivers/watchdog/watchdog_dev.c

···
 	}
 
 	kthread_init_work(&wd_data->work, watchdog_ping_work);
-	hrtimer_init(&wd_data->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
-	wd_data->timer.function = watchdog_timer_expired;
+	hrtimer_setup(&wd_data->timer, watchdog_timer_expired, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL_HARD);
 	watchdog_hrtimer_pretimeout_init(wdd);
 
 	if (wdd->id == 0) {

drivers/watchdog/watchdog_hrtimer_pretimeout.c

···
 {
 	struct watchdog_core_data *wd_data = wdd->wd_data;
 
-	hrtimer_init(&wd_data->pretimeout_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-	wd_data->pretimeout_timer.function = watchdog_hrtimer_pretimeout;
+	hrtimer_setup(&wd_data->pretimeout_timer, watchdog_hrtimer_pretimeout, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
 }
 
 void watchdog_hrtimer_pretimeout_start(struct watchdog_device *wdd)

kernel/watchdog.c

···
 	 * Start the timer first to prevent the hardlockup watchdog triggering
 	 * before the timer has a chance to fire.
 	 */
-	hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
-	hrtimer->function = watchdog_timer_fn;
+	hrtimer_setup(hrtimer, watchdog_timer_fn, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
 	hrtimer_start(hrtimer, ns_to_ktime(sample_period),
 		      HRTIMER_MODE_REL_PINNED_HARD);