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watchdog: core: Fix error handling of watchdog_dev_init()

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Fix the error handling paths of watchdog_dev_init().

Signed-off-by: Wei Yongjun <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
Wei Yongjun 2016-07-19 11:22:34 +00:00 • committed by Wim Van Sebroeck
commit 138913cb63
1 changed files with 8 additions and 3 deletions
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11
drivers/watchdog/watchdog_dev.c
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@ -972,17 +972,22 @@ int __init watchdog_dev_init(void)
err = class_register(&watchdog_class);
if (err < 0) {
pr_err("couldn't register class\n");
return err;
goto err_register;
}
err = alloc_chrdev_region(&watchdog_devt, 0, MAX_DOGS, "watchdog");
if (err < 0) {
pr_err("watchdog: unable to allocate char dev region\n");
class_unregister(&watchdog_class);
return err;
goto err_alloc;
}
return 0;
err_alloc:
class_unregister(&watchdog_class);
err_register:
destroy_workqueue(watchdog_wq);
return err;
}
/*