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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-29 15:48:02 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-29 15:48:02 +0100 |
| commit | 129961ecaf21c9ee899ad9067d917c1aa172fb7a (patch) | |
| tree | 49eafdcf4d6ac490ecdd92c36c285817872eaf34 /drivers/virtio/virtio_ring.c | |
| parent | 392c57a2ec811db37ae45adc513704cf92ba3e69 (diff) | |
| parent | cccf59abea4e1c36322e365d6e61ff7de1f3ee07 (diff) | |
| download | linux-129961ecaf21c9ee899ad9067d917c1aa172fb7a.tar.gz linux-129961ecaf21c9ee899ad9067d917c1aa172fb7a.tar.bz2 linux-129961ecaf21c9ee899ad9067d917c1aa172fb7a.zip | |
Merge branch 'wells/lpc32xx-arch_v2' of git://git.lpclinux.com/linux-2.6-lpc into devel-stable
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index afe7e21dd0ae..1475ed6b575f 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -164,7 +164,8 @@ int virtqueue_add_buf_gfp(struct virtqueue *_vq, gfp_t gfp) { struct vring_virtqueue *vq = to_vvq(_vq); - unsigned int i, avail, head, uninitialized_var(prev); + unsigned int i, avail, uninitialized_var(prev); + int head; START_USE(vq); @@ -174,7 +175,7 @@ int virtqueue_add_buf_gfp(struct virtqueue *_vq, * buffers, then go indirect. FIXME: tune this threshold */ if (vq->indirect && (out + in) > 1 && vq->num_free) { head = vring_add_indirect(vq, sg, out, in, gfp); - if (head != vq->vring.num) + if (likely(head >= 0)) goto add_head; } |