Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/net needs config space access so make it fail gracefully if not there.
Signed-off-by: Michael S. Tsirkin <[email protected]> --- drivers/net/virtio_net.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 5ca9771..9bc1072 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1713,6 +1713,12 @@ static int virtnet_probe(struct virtio_device *vdev) struct virtnet_info *vi; u16 max_queue_pairs; + if (!vdev->config->get) { + dev_err(&vdev->dev, "%s failure: config access disabled\n", + __func__); + return -EINVAL; + } + if (!virtnet_validate_features(vdev)) return -EINVAL; -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
