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Commit efda0ad4 authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Greg Kroah-Hartman
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virtio: console: fix error handling in init() function 



If register_virtio_driver() fails, virtio-ports class is not destroyed.
The patch adds error handling of register_virtio_driver().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9a32bb39

drivers/char/virtio_console.c

+11 −1
Original line number Diff line number Diff line
@@ -1941,7 +1941,17 @@ static int __init init(void) 
	INIT_LIST_HEAD(&pdrvdata.consoles);

	INIT_LIST_HEAD(&pdrvdata.portdevs);



	return register_virtio_driver(&virtio_console);

	err = register_virtio_driver(&virtio_console);

	if (err < 0) {

		pr_err("Error %d registering virtio driver\n", err);

		goto free;

	}

	return 0;

free:

	if (pdrvdata.debugfs_dir)

		debugfs_remove_recursive(pdrvdata.debugfs_dir);

	class_destroy(pdrvdata.class);

	return err;

}



static void __exit fini(void)