Commit 87646a34 authored Jul 19, 2017 by Jason Wang Committed by David S. Miller Jul 24, 2017

virtio_ring: allow to store zero as the ctx



Allow zero to be store as a ctx, with this we could store e.g zero
value which could be meaningful for the case of storing headroom
through ctx.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 7a68ada6

drivers/virtio/virtio_ring.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -391,7 +391,7 @@ static inline int virtqueue_add(struct virtqueue *_vq,
		vq->desc_state[head].data = data;
		if (indirect)
		vq->desc_state[head].indir_desc = desc;
		if (ctx)
		else
		vq->desc_state[head].indir_desc = ctx;

		/* Put entry in available array (but don't update avail->idx until they