On Thu, Jun 17, 2021 at 05:03:59PM -0700, Nathan Chancellor wrote:
> 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 f7e30f01a9e2 ("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: e4e3f24b822f ("net/mlx5: Provide cpumask at EQ creation phase")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1400
> Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
> ---
> drivers/net/ethernet/mellanox/mlx5/core/eq.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxx>
