Commit 38f37b57 authored Oct 23, 2014 by Michael S. Tsirkin

virtio_blk: fix race at module removal



If a device appears while module is being removed,
driver will get a callback after we've given up
on the major number.

In theory this means this major number can get reused
by something else, resulting in a conflict.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>

parent 393c525b

drivers/block/virtio_blk.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -884,8 +884,8 @@ out_destroy_workqueue:

		static void __exit fini(void)
		{
		unregister_blkdev(major, "virtblk");
		unregister_virtio_driver(&virtio_blk);
		unregister_blkdev(major, "virtblk");
		destroy_workqueue(virtblk_wq);
		}
		module_init(init);

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