[PATCH] fixup! virtio: add legacy feature table support

Michael S. Tsirkin
Thu, 23 Oct 2014 17:34:27 -0000

the following is needed on top of v4 virtio 1.0 support
that I sent.  Will squash it in for v5.

Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
 drivers/virtio/virtio.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 85a164e..e9018b4 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -113,6 +113,13 @@ void virtio_check_driver_offered_feature(const struct
virtio_device *vdev,
 	for (i = 0; i < drv->feature_table_size; i++)
 		if (drv->feature_table[i] == fbit)
 			return;
+
+	if (drv->feature_table_legacy) {
+		for (i = 0; i < drv->feature_table_size_legacy; i++)
+			if (drv->feature_table_legacy[i] == fbit)
+				return;
+	}
+
 	BUG();
 }
 EXPORT_SYMBOL_GPL(virtio_check_driver_offered_feature);
--
MST