From: Ye Guojin <ye.guojin@xxxxxxxxxx> commit 0466a39bd0b6c462338f10d18076703d14a552de upstream. This was found by coccicheck: ./drivers/block/virtio_blk.c, 334, 14-17, WARNING Unsigned expression compared with zero num < 0 Reported-by: Zeal Robot <zealci@xxxxxxxxxx> Signed-off-by: Ye Guojin <ye.guojin@xxxxxxxxxx> Link: https://lore.kernel.org/r/20211117063955.160777-1-ye.guojin@xxxxxxxxxx Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> Fixes: 02746e26c39e ("virtio-blk: avoid preallocating big SGL for data") Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx> Reviewed-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx> Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/block/virtio_blk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -308,7 +308,7 @@ static blk_status_t virtio_queue_rq(stru struct request *req = bd->rq; struct virtblk_req *vbr = blk_mq_rq_to_pdu(req); unsigned long flags; - unsigned int num; + int num; int qid = hctx->queue_num; int err; bool notify = false;
