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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-11-06 15:46:18 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-11-06 15:46:18 +0000 |
| commit | 330f28f691e9b349e34adcaf82b273cf061bb491 (patch) | |
| tree | fca3bfe41eff25ef19f576cef1979c68f6521af5 /drivers/virtio/virtio_ring.c | |
| parent | fe3e78e073d25308756f38019956061153267769 (diff) | |
| parent | 6fc786d5034ed7ce2d43c459211137de6d99dd28 (diff) | |
Merge branch 'for-2.6.32' into for-2.6.33
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index f5360058072..fbd2ecde93e 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -285,6 +285,9 @@ static void *vring_get_buf(struct virtqueue *_vq, unsigned int *len) return NULL; } + /* Only get used array entries after they have been exposed by host. */ + rmb(); + i = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].id; *len = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].len; |