[PATCH 5.9 578/757] vdpa/mlx5: Fix failure to bring link up

[Greg Kroah-Hartman]

From: Eli Cohen <elic@xxxxxxxxxx>

[ Upstream commit 36b02df2d204da9f7a571f16ed9e91a4d083f207 ]

Set VIRTIO_NET_S_LINK_UP in config status to allow the get the bring the
net device's link up.

Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200917121540.GA98184@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 56228467d7ec6..5ca309473c03d 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -1541,6 +1541,7 @@ static int mlx5_vdpa_set_features(struct vdpa_device *vdev, u64 features)
 
 	ndev->mvdev.actual_features = features & ndev->mvdev.mlx_features;
 	ndev->config.mtu = cpu_to_mlx5vdpa16(mvdev, ndev->mtu);
+	ndev->config.status |= cpu_to_mlx5vdpa16(mvdev, VIRTIO_NET_S_LINK_UP);
 	return err;
 }
 
-- 
2.25.1