[PATCH] virtio_blk: corrent types for status handling
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2021-10-25 07:59:06
Also in:
lkml, virtualization
Subsystem:
block layer, the rest, virtio block and scsi drivers, virtio core · Maintainers:
Jens Axboe, Linus Torvalds, "Michael S. Tsirkin", Jason Wang
virtblk_setup_cmd returns blk_status_t in an int, callers then assign it
back to a blk_status_t variable. blk_status_t is either u32 or (more
typically) u8 so it works, but is inelegant and causes sparse warnings.
Pass the status in blk_status_t in a consistent way.
Reported-by: kernel test robot <redacted>
Fixes: b2c5221fd074 ("virtio-blk: avoid preallocating big SGL for data")
Cc: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
drivers/block/virtio_blk.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index c336d9bb9105..c7d05ff24084 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c@@ -208,8 +208,9 @@ static void virtblk_cleanup_cmd(struct request *req) kfree(bvec_virt(&req->special_vec)); } -static int virtblk_setup_cmd(struct virtio_device *vdev, struct request *req, - struct virtblk_req *vbr) +static blk_status_t virtblk_setup_cmd(struct virtio_device *vdev, + struct request *req, + struct virtblk_req *vbr) { bool unmap = false; u32 type;
@@ -317,14 +318,15 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx, unsigned long flags; unsigned int num; int qid = hctx->queue_num; - int err; bool notify = false; + blk_status_t status; + int err; BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems); - err = virtblk_setup_cmd(vblk->vdev, req, vbr); - if (unlikely(err)) - return err; + status = virtblk_setup_cmd(vblk->vdev, req, vbr); + if (unlikely(status)) + return status; blk_mq_start_request(req);
--
MST