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authorXuan Zhuo <xuanzhuo@linux.alibaba.com>2022-02-24 19:03:55 +0800
committerMichael S. Tsirkin <mst@redhat.com>2022-03-28 16:52:58 -0400
commitb4282ebc71aacfa69fc998173ca93b09235ce71f (patch)
tree9a8cf76c26aec090a58179110d4a7f0fd72733f1 /drivers/virtio
parentd80dc15bb6e76a6c6b838f683361ceb68950dbbd (diff)
downloadlinux-b4282ebc71aacfa69fc998173ca93b09235ce71f.tar.bz2
virtio_ring: remove flags check for unmap split indirect desc
When calling vring_unmap_one_split_indirect(), it will not encounter the situation that the flags contains VRING_DESC_F_INDIRECT. So remove this logic. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Link: https://lore.kernel.org/r/20220224110402.108161-3-xuanzhuo@linux.alibaba.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio_ring.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 7cf3ae057833..fadd0a7503e9 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -379,19 +379,11 @@ static void vring_unmap_one_split_indirect(const struct vring_virtqueue *vq,
flags = virtio16_to_cpu(vq->vq.vdev, desc->flags);
- if (flags & VRING_DESC_F_INDIRECT) {
- dma_unmap_single(vring_dma_dev(vq),
- virtio64_to_cpu(vq->vq.vdev, desc->addr),
- virtio32_to_cpu(vq->vq.vdev, desc->len),
- (flags & VRING_DESC_F_WRITE) ?
- DMA_FROM_DEVICE : DMA_TO_DEVICE);
- } else {
- dma_unmap_page(vring_dma_dev(vq),
- virtio64_to_cpu(vq->vq.vdev, desc->addr),
- virtio32_to_cpu(vq->vq.vdev, desc->len),
- (flags & VRING_DESC_F_WRITE) ?
- DMA_FROM_DEVICE : DMA_TO_DEVICE);
- }
+ dma_unmap_page(vring_dma_dev(vq),
+ virtio64_to_cpu(vq->vq.vdev, desc->addr),
+ virtio32_to_cpu(vq->vq.vdev, desc->len),
+ (flags & VRING_DESC_F_WRITE) ?
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
static unsigned int vring_unmap_one_split(const struct vring_virtqueue *vq,