[PATCH v2 2/9] virtio_ring: remove flags check for unmap split indirect desc
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2022-02-24 11:04:13
Also in:
bpf, virtualization
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
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> --- drivers/virtio/virtio_ring.c | 18 +++++------------- 1 file 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,
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2.31.0