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virtio: fix race in enable_cb
[sfrench/cifs-2.6.git]
/
drivers
/
virtio
/
virtio_ring.c
diff --git
a/drivers/virtio/virtio_ring.c
b/drivers/virtio/virtio_ring.c
index 3a28c1382131d04940035448d24aada5244e7589..aa714028641e630b068f683fc67e6707d6c6a853 100644
(file)
--- a/
drivers/virtio/virtio_ring.c
+++ b/
drivers/virtio/virtio_ring.c
@@
-232,7
+232,6
@@
static bool vring_enable_cb(struct virtqueue *_vq)
vq->vring.avail->flags &= ~VRING_AVAIL_F_NO_INTERRUPT;
mb();
if (unlikely(more_used(vq))) {
- vq->vring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
END_USE(vq);
return false;
}