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[SCSI] gdth: Convert to use regular kernel types.
[safe/jmp/linux-2.6]
/
drivers
/
virtio
/
virtio_ring.c
diff --git
a/drivers/virtio/virtio_ring.c
b/drivers/virtio/virtio_ring.c
index
f536005
..
fbd2ecd
100644
(file)
--- 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;