virtio: explicit enable_cb/disable_cb rather than callback return.

It seems that virtio_net wants to disable callbacks (interrupts) before
calling netif_rx_schedule(), so we can't use the return value to do so.

Rename "restart" to "cb_enable" and introduce "cb_disable" hook: callback
now returns void, rather than a boolean.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 1 insertions, 3 deletions

diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 78d7946f81fe..42eea5fe2628 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -199,14 +199,12 @@ static void p9_virtio_close(struct p9_trans *trans)
         kfree(trans);
 }
 
-static bool p9_virtio_intr(struct virtqueue *q)
+static void p9_virtio_intr(struct virtqueue *q)
 {
         struct virtio_chan *chan = q->vdev->priv;
 
         P9_DPRINTK(P9_DEBUG_TRANS, "9p poll_wakeup: %p\n", &chan->wq);
         wake_up_interruptible(&chan->wq);
-
-        return true;
 }
 
 static int p9_virtio_probe(struct virtio_device *dev)