virtio: allow finalize_features to fail
This will make it easy for transports to validate features and return
failure.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
index c792b5f..789275f 100644
--- a/drivers/s390/kvm/virtio_ccw.c
+++ b/drivers/s390/kvm/virtio_ccw.c
@@ -752,7 +752,7 @@
return rc;
}
-static void virtio_ccw_finalize_features(struct virtio_device *vdev)
+static int virtio_ccw_finalize_features(struct virtio_device *vdev)
{
struct virtio_ccw_device *vcdev = to_vc_device(vdev);
struct virtio_feature_desc *features;
@@ -760,7 +760,7 @@
ccw = kzalloc(sizeof(*ccw), GFP_DMA | GFP_KERNEL);
if (!ccw)
- return;
+ return 0;
features = kzalloc(sizeof(*features), GFP_DMA | GFP_KERNEL);
if (!features)
@@ -793,6 +793,8 @@
out_free:
kfree(features);
kfree(ccw);
+
+ return 0;
}
static void virtio_ccw_get_config(struct virtio_device *vdev,