Hi Suwan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.17] [also build test WARNING on next-20220321] [cannot apply to axboe-block/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Suwan-Kim/virtio-blk-support-polling-I-O-and-mq_ops-queue_rqs/20220321-223027 base: f443e374ae131c168a065ea1748feac6b2e76613 config: x86_64-rhel-8.3-kselftests (https://download.01.org/0day-ci/archive/20220322/202203220946.YKj9GuI8-lkp@xxxxxxxxx/config) compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/5388c0729248236712cf865643a2190989dabbb5 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Suwan-Kim/virtio-blk-support-polling-I-O-and-mq_ops-queue_rqs/20220321-223027 git checkout 5388c0729248236712cf865643a2190989dabbb5 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/block/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/block/virtio_blk.c:803:66: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected int ioerror @@ got restricted blk_status_t @@ drivers/block/virtio_blk.c:803:66: sparse: expected int ioerror drivers/block/virtio_blk.c:803:66: sparse: got restricted blk_status_t vim +803 drivers/block/virtio_blk.c 788 789 static int virtblk_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) 790 { 791 struct virtio_blk_vq *vq = hctx->driver_data; 792 struct virtblk_req *vbr; 793 unsigned long flags; 794 unsigned int len; 795 int found = 0; 796 797 spin_lock_irqsave(&vq->lock, flags); 798 799 while ((vbr = virtqueue_get_buf(vq->vq, &len)) != NULL) { 800 struct request *req = blk_mq_rq_from_pdu(vbr); 801 802 found++; > 803 if (!blk_mq_add_to_batch(req, iob, virtblk_result(vbr), 804 virtblk_complete_batch)) 805 blk_mq_complete_request(req); 806 } 807 808 spin_unlock_irqrestore(&vq->lock, flags); 809 810 return found; 811 } 812 -- 0-DAY CI Kernel Test Service https://01.org/lkp
