Commit 3c4c3774 authored by Noa Osherovich's avatar Noa Osherovich Committed by Doug Ledford

IB/mlx5: Fix entries check in mlx5_ib_resize_cq

Verify that number of entries is less than device capability.
Add an appropriate warning message for error flow.

Fixes: bde51583 ('IB/mlx5: Add support for resize CQ')
Signed-off-by: default avatarMajd Dibbiny <majd@mellanox.com>
Signed-off-by: default avatarNoa Osherovich <noaos@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 9ea57852
...@@ -1169,11 +1169,16 @@ int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata) ...@@ -1169,11 +1169,16 @@ int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
return -ENOSYS; return -ENOSYS;
} }
if (entries < 1) if (entries < 1 ||
entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz))) {
mlx5_ib_warn(dev, "wrong entries number %d, max %d\n",
entries,
1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz));
return -EINVAL; return -EINVAL;
}
entries = roundup_pow_of_two(entries + 1); entries = roundup_pow_of_two(entries + 1);
if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)) + 1) if (entries > (1 << MLX5_CAP_GEN(dev->mdev, log_max_cq_sz)) + 1)
return -EINVAL; return -EINVAL;
if (entries == ibcq->cqe + 1) if (entries == ibcq->cqe + 1)
......
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