virtio_pmem: fix sparse warning

This patch fixes below sparse warning related to __virtio
type in virtio pmem driver. This is reported by Intel test
bot on linux-next tree.

nd_virtio.c:56:28: warning: incorrect type in assignment
                                (different base types)
nd_virtio.c:56:28:    expected unsigned int [unsigned] [usertype] type
nd_virtio.c:56:28:    got restricted __virtio32
nd_virtio.c:93:59: warning: incorrect type in argument 2
                                (different base types)
nd_virtio.c:93:59:    expected restricted __virtio32 [usertype] val
nd_virtio.c:93:59:    got unsigned int [unsigned] [usertype] ret

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/nvdimm/nd_virtio.c b/drivers/nvdimm/nd_virtio.c
index 8645275..10351d5 100644 (file)
--- a/drivers/nvdimm/nd_virtio.c
+++ b/drivers/nvdimm/nd_virtio.c
@@ -53,7 +53,7 @@ static int virtio_pmem_flush(struct nd_region *nd_region)
        init_waitqueue_head(&req_data->host_acked);
        init_waitqueue_head(&req_data->wq_buf);
        INIT_LIST_HEAD(&req_data->list);
-       req_data->req.type = cpu_to_virtio32(vdev, VIRTIO_PMEM_REQ_TYPE_FLUSH);
+       req_data->req.type = cpu_to_le32(VIRTIO_PMEM_REQ_TYPE_FLUSH);
        sg_init_one(&sg, &req_data->req, sizeof(req_data->req));
        sgs[0] = &sg;
        sg_init_one(&ret, &req_data->resp.ret, sizeof(req_data->resp));
@@ -90,7 +90,7 @@ static int virtio_pmem_flush(struct nd_region *nd_region)
        } else {
                /* A host repsonse results in "host_ack" getting called */
                wait_event(req_data->host_acked, req_data->done);
-               err = virtio32_to_cpu(vdev, req_data->resp.ret);
+               err = le32_to_cpu(req_data->resp.ret);
        }
 
        kfree(req_data);

diff --git a/include/uapi/linux/virtio_pmem.h b/include/uapi/linux/virtio_pmem.h
index efcd72f..9a63ed6 100644 (file)
--- a/include/uapi/linux/virtio_pmem.h
+++ b/include/uapi/linux/virtio_pmem.h
@@ -23,12 +23,12 @@ struct virtio_pmem_config {
 
 struct virtio_pmem_resp {
        /* Host return status corresponding to flush request */
-       __u32 ret;
+       __le32 ret;
 };
 
 struct virtio_pmem_req {
        /* command type */
-       __u32 type;
+       __le32 type;
 };
 
 #endif