Commit 7f03b17d authored Oct 29, 2013 by Heinz Graalfs Committed by Rusty Russell Oct 29, 2013

virtio_blk: verify if queue is broken after virtqueue_get_buf()



In case virtqueue_get_buf() returned with a NULL pointer verify if the
virtqueue is broken in order to leave while loop.

Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent b3b32c94

drivers/block/virtio_blk.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -292,6 +292,8 @@ static void virtblk_done(struct virtqueue *vq)
		req_done = true;
		}
		}
		if (unlikely(virtqueue_is_broken(vq)))
		break;
		} while (!virtqueue_enable_cb(vq));
		/* In case queue is stopped waiting for more buffers. */
		if (req_done)