From 87646a348ebcb1415a479be31f1c41f276e057e6 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Wed, 19 Jul 2017 16:54:45 +0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/virtio/virtio_ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 5e1b548828e6..9aaa177e8209 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -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 -- 2.20.1