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net/mlx5: Use cpumask_available() in mlx5_eq_create_generic()

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When CONFIG_CPUMASK_OFFSTACK is unset, cpumask_var_t is not a pointer
but a single element array, meaning its address in a structure cannot be
NULL as long as it is not the first element, which it is not. This
results in a clang warning:

drivers/net/ethernet/mellanox/mlx5/core/eq.c:715:14: warning: address of
array 'param->affinity' will always evaluate to 'true'
[-Wpointer-bool-conversion]
        if (!param->affinity)
            ~~~~~~~~^~~~~~~~
1 warning generated.

The helper cpumask_available was added in commit f7e30f01a9 ("cpumask:
Add helper cpumask_available()") to handle situations like this so use
it to keep the meaning of the code the same while resolving the warning.

Fixes: e4e3f24b82 ("net/mlx5: Provide cpumask at EQ creation phase")
Link: https://github.com/ClangBuiltLinux/linux/issues/1400
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Nathan Chancellor 2021-06-17 17:03:59 -07:00 committed by Saeed Mahameed
parent 9201ab5f55
commit d4472a4b8c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/eq.c
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@ -712,7 +712,7 @@ mlx5_eq_create_generic(struct mlx5_core_dev *dev,
struct mlx5_eq *eq = kvzalloc(sizeof(*eq), GFP_KERNEL);
int err;
if (!param->affinity)
if (!cpumask_available(param->affinity))
return ERR_PTR(-EINVAL);
if (!eq)