From 1ae2757c6c4525c9b42f408c86818f843bad7418 Mon Sep 17 00:00:00 2001 From: yinyin Date: Thu, 22 Aug 2013 14:47:16 +0800 Subject: virtio: virtqueue_get_avail_bytes: fix desc_pa when loop over the indirect descriptor table virtqueue_get_avail_bytes: when found a indirect desc, we need loop over it. /* loop over the indirect descriptor table */ indirect = 1; max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc); num_bufs = i = 0; desc_pa = vring_desc_addr(desc_pa, i); But, It init i to 0, then use i to update desc_pa. so we will always get: desc_pa = vring_desc_addr(desc_pa, 0); the last two line should swap. Cc: qemu-stable@nongnu.org Signed-off-by: Yin Yin Reviewed-by: Stefan Hajnoczi Signed-off-by: Michael S. Tsirkin --- hw/virtio/virtio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'hw/virtio') diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index f03c45dff5..2f1e73bc75 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -377,8 +377,8 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes, /* loop over the indirect descriptor table */ indirect = 1; max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc); - num_bufs = i = 0; desc_pa = vring_desc_addr(desc_pa, i); + num_bufs = i = 0; } do { -- cgit v1.2.1