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| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2021-10-26 15:31:00 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-10-27 15:54:34 -0400 |
| commit | 890d33561337ffeba0d8ba42517e71288cfee2b6 (patch) | |
| tree | 94a375037aac6b7df3801c2840a2c59901ba5cca | |
| parent | 0943aacf5ae10471b68a702c022b42c89e91ba9e (diff) | |
| download | linux-890d33561337ffeba0d8ba42517e71288cfee2b6.tar.gz | |
virtio-ring: fix DMA metadata flags
The flags are currently overwritten, leading to the wrong direction
being passed to the DMA unmap functions.
Fixes: 72b5e8958738aaa4 ("virtio-ring: store DMA metadata in desc_extra for split virtqueue")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20211026133100.17541-1-vincent.whitchurch@axis.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index dd95dfd85e9808..3035bb6f545854 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -576,7 +576,7 @@ static inline int virtqueue_add_split(struct virtqueue *_vq, /* Last one doesn't continue. */ desc[prev].flags &= cpu_to_virtio16(_vq->vdev, ~VRING_DESC_F_NEXT); if (!indirect && vq->use_dma_api) - vq->split.desc_extra[prev & (vq->split.vring.num - 1)].flags = + vq->split.desc_extra[prev & (vq->split.vring.num - 1)].flags &= ~VRING_DESC_F_NEXT; if (indirect) { |