virtio_net: enable VQs early

virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, virtio net violated this rule by using receive VQs within probe. To fix, call virtio_device_ready before using VQs. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

virtio_net: enable VQs early
virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, virtio net violated this rule by using receive VQs within probe. To fix, call virtio_device_ready before using VQs. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Michael S. Tsirkin · Rusty Russell
1 parent 3569db5930
Showing 1 changed file with 2 additions and 0 deletions Side-by-side Diff
drivers/net/virtio_net.c
@@ -1792,6 +1792,8 @@
 		goto free_vqs;
 	}
  
+	virtio_device_ready(vdev);
+
 	/* Last of all, set up some receive buffers. */
 	for (i = 0; i < vi->curr_queue_pairs; i++) {
 		try_fill_recv(&vi->rq[i], GFP_KERNEL);
...	...	@@ -1792,6 +1792,8 @@
1792	1792	goto free_vqs;
1793	1793	}
1794	1794
	1795	+ virtio_device_ready(vdev);
	1796	+
1795	1797	/* Last of all, set up some receive buffers. */
1796	1798	for (i = 0; i < vi->curr_queue_pairs; i++) {
1797	1799	try_fill_recv(&vi->rq[i], GFP_KERNEL);