64 	int err = 0;  in watchdog_ping()  local
69 		err = -ENODEV;  in watchdog_ping()
77 		err = wdd->ops->ping(wdd);	/* ping the watchdog */  in watchdog_ping()
79 		err = wdd->ops->start(wdd);	/* restart watchdog */  in watchdog_ping()
83 	return err;  in watchdog_ping()
97 	int err = 0;  in watchdog_start()  local
102 		err = -ENODEV;  in watchdog_start()
109 	err = wdd->ops->start(wdd);  in watchdog_start()
110 	if (err == 0)  in watchdog_start()
115 	return err;  in watchdog_start()
130 	int err = 0;  in watchdog_stop()  local
135 		err = -ENODEV;  in watchdog_stop()
144 		err = -EBUSY;  in watchdog_stop()
148 	err = wdd->ops->stop(wdd);  in watchdog_stop()
149 	if (err == 0)  in watchdog_stop()
154 	return err;  in watchdog_stop()
168 	int err = 0;  in watchdog_get_status()  local
177 		err = -ENODEV;  in watchdog_get_status()
185 	return err;  in watchdog_get_status()
197 	int err;  in watchdog_set_timeout()  local
208 		err = -ENODEV;  in watchdog_set_timeout()
212 	err = wdd->ops->set_timeout(wdd, timeout);  in watchdog_set_timeout()
216 	return err;  in watchdog_set_timeout()
230 	int err = 0;  in watchdog_get_timeleft()  local
239 		err = -ENODEV;  in watchdog_get_timeleft()
247 	return err;  in watchdog_get_timeleft()
260 	int err;  in watchdog_ioctl_op()  local
268 		err = -ENODEV;  in watchdog_ioctl_op()
272 	err = wdd->ops->ioctl(wdd, cmd, arg);  in watchdog_ioctl_op()
276 	return err;  in watchdog_ioctl_op()
297 	int err;  in watchdog_write()  local
317 	err = watchdog_ping(wdd);  in watchdog_write()
318 	if (err < 0)  in watchdog_write()
319 		return err;  in watchdog_write()
341 	int err;  in watchdog_ioctl()  local
343 	err = watchdog_ioctl_op(wdd, cmd, arg);  in watchdog_ioctl()
344 	if (err != -ENOIOCTLCMD)  in watchdog_ioctl()
345 		return err;  in watchdog_ioctl()
352 		err = watchdog_get_status(wdd, &val);  in watchdog_ioctl()
353 		if (err == -ENODEV)  in watchdog_ioctl()
354 			return err;  in watchdog_ioctl()
362 			err = watchdog_stop(wdd);  in watchdog_ioctl()
363 			if (err < 0)  in watchdog_ioctl()
364 				return err;  in watchdog_ioctl()
367 			err = watchdog_start(wdd);  in watchdog_ioctl()
368 			if (err < 0)  in watchdog_ioctl()
369 				return err;  in watchdog_ioctl()
379 		err = watchdog_set_timeout(wdd, val);  in watchdog_ioctl()
380 		if (err < 0)  in watchdog_ioctl()
381 			return err;  in watchdog_ioctl()
385 		err = watchdog_ping(wdd);  in watchdog_ioctl()
386 		if (err < 0)  in watchdog_ioctl()
387 			return err;  in watchdog_ioctl()
395 		err = watchdog_get_timeleft(wdd, &val);  in watchdog_ioctl()
396 		if (err)  in watchdog_ioctl()
397 			return err;  in watchdog_ioctl()
416 	int err = -EBUSY;  in watchdog_open()  local
436 	err = watchdog_start(wdd);  in watchdog_open()
437 	if (err < 0)  in watchdog_open()
452 	return err;  in watchdog_open()
468 	int err = -EBUSY;  in watchdog_release()  local
476 		err = 0;  in watchdog_release()
479 		err = watchdog_stop(wdd);  in watchdog_release()
482 	if (err < 0) {  in watchdog_release()
528 	int err, devno;  in watchdog_dev_register()  local
533 		err = misc_register(&watchdog_miscdev);  in watchdog_dev_register()
534 		if (err != 0) {  in watchdog_dev_register()
536 				wdd->info->identity, WATCHDOG_MINOR, err);  in watchdog_dev_register()
537 			if (err == -EBUSY)  in watchdog_dev_register()
541 			return err;  in watchdog_dev_register()
551 	err  = cdev_add(&wdd->cdev, devno, 1);  in watchdog_dev_register()
552 	if (err) {  in watchdog_dev_register()
560 	return err;  in watchdog_dev_register()
592 	int err = alloc_chrdev_region(&watchdog_devt, 0, MAX_DOGS, "watchdog");  in watchdog_dev_init()  local
593 	if (err < 0)  in watchdog_dev_init()
595 	return err;  in watchdog_dev_init()