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watchdog: Check dev_set_name() return value 

It's possible that dev_set_name() returns -ENOMEM, catch and handle this.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220920020312.2383-1-liubo03@inspur.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Bo Liu 2022-09-19 22:03:12 -04:00 committed by Wim Van Sebroeck
parent ec122fd94e
commit 0e01297212
1 changed files with 5 additions and 1 deletions
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6
drivers/watchdog/watchdog_dev.c
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@ -1015,7 +1015,11 @@ static int watchdog_cdev_register(struct watchdog_device *wdd)
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);
err = dev_set_name(&wd_data->dev, "watchdog%d", wdd->id);
if (err) {
put_device(&wd_data->dev);
return err;
}
kthread_init_work(&wd_data->work, watchdog_ping_work);
hrtimer_init(&wd_data->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);