From: Eli Cohen elic@nvidia.com
commit 37e07e705888e4c3502f204e9c6785c9c2d6d86a upstream.
Restore ndev->cur_num_vqs to the original value in case change_num_qps() fails.
Fixes: 52893733f2c5 ("vdpa/mlx5: Add multiqueue support") Reviewed-by: Si-Wei Liusi-wei.liu@oracle.com Acked-by: Jason Wang jasowang@redhat.com Signed-off-by: Eli Cohen elic@nvidia.com Link: https://lore.kernel.org/r/20220105114646.577224-10-elic@nvidia.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/vdpa/mlx5/net/mlx5_vnet.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -1510,9 +1510,11 @@ static int change_num_qps(struct mlx5_vd return 0;
clean_added: - for (--i; i >= cur_qps; --i) + for (--i; i >= 2 * cur_qps; --i) teardown_vq(ndev, &ndev->vqs[i]);
+ ndev->cur_num_vqs = 2 * cur_qps; + return err; }