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vdpa/mlx5: Restore cur_num_vqs in case of failure in change_num_qps()

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commit 37e07e705888e4c3502f204e9c6785c9c2d6d86a upstream.

Restore ndev->cur_num_vqs to the original value in case change_num_qps()
fails.

Fixes: 52893733f2 ("vdpa/mlx5: Add multiqueue support")
Reviewed-by: Si-Wei Liu<si-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>
This commit is contained in:
Eli Cohen
2022-01-05 13:46:41 +02:00
committed by Greg Kroah-Hartman
parent 786e608e97
commit 63bc14d6e2
1 changed files with 3 additions and 1 deletions
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4
drivers/vdpa/mlx5/net/mlx5_vnet.c
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@@ -1510,9 +1510,11 @@ static int change_num_qps(struct mlx5_vdpa_dev *mvdev, int newqps)
return 0; return 0;
clean_added: clean_added:
for (--i; i >= cur_qps; --i) for (--i; i >= 2 * cur_qps; --i)
teardown_vq(ndev, &ndev->vqs[i]); teardown_vq(ndev, &ndev->vqs[i]);
ndev->cur_num_vqs = 2 * cur_qps;
return err; return err;
} }