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IB/mlx5: Fix check of number of entries in create CQ

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Verify that the value is non negative before rounding up to power of 2.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Eli Cohen 2013-10-23 09:53:13 +03:00 committed by Roland Dreier
parent 959f58544b
commit 51ee86a4af
1 changed files with 4 additions and 1 deletions
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5
drivers/infiniband/hw/mlx5/cq.c
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@ -653,8 +653,11 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
int eqn;
int err;
if (entries < 0)
return ERR_PTR(-EINVAL);
entries = roundup_pow_of_two(entries + 1);
if (entries < 1 || entries > dev->mdev.caps.max_cqes)
if (entries > dev->mdev.caps.max_cqes)
return ERR_PTR(-EINVAL);
cq = kzalloc(sizeof(*cq), GFP_KERNEL);