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virtio_ring: remove flags check for unmap packed indirect desc

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When calling vring_unmap_desc_packed(), 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/20220224110402.108161-4-xuanzhuo@linux.alibaba.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xuan Zhuo 2022-02-24 19:03:56 +08:00 committed by Michael S. Tsirkin
parent b4282ebc71
commit 920379a465
1 changed files with 5 additions and 13 deletions
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8
drivers/virtio/virtio_ring.c
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@ -1009,20 +1009,12 @@ static void vring_unmap_desc_packed(const struct vring_virtqueue *vq,
flags = le16_to_cpu(desc->flags); flags = le16_to_cpu(desc->flags);
if (flags & VRING_DESC_F_INDIRECT) {
dma_unmap_single(vring_dma_dev(vq),
le64_to_cpu(desc->addr),
le32_to_cpu(desc->len),
(flags & VRING_DESC_F_WRITE) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
} else {
dma_unmap_page(vring_dma_dev(vq), dma_unmap_page(vring_dma_dev(vq),
le64_to_cpu(desc->addr), le64_to_cpu(desc->addr),
le32_to_cpu(desc->len), le32_to_cpu(desc->len),
(flags & VRING_DESC_F_WRITE) ? (flags & VRING_DESC_F_WRITE) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE); DMA_FROM_DEVICE : DMA_TO_DEVICE);
} }
}
static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg, static struct vring_packed_desc *alloc_indirect_packed(unsigned int total_sg,
gfp_t gfp) gfp_t gfp)