Re: [PATCH] thermal: Fix implicit type conversion

[Rafael J. Wysocki]

On Thu, Oct 28, 2021 at 5:22 AM Jiasheng Jiang <jiasheng@xxxxxxxxxxx> wrote:
>
> The parameter 'cpu' is defined as unsigned int.
> However in the cpumask_next() it is implicitly type conversed
> to int.
> It is universally accepted that the implicit type conversion is
> terrible.
> Also, having the good programming custom will set an example for
> others.
> Thus, it might be better to change the type of 'cpu' from
> unsigned int to int.
>
> Fixes: 3e8c4d3 ("drivers: thermal: Move various drivers for intel platforms into a subdir")
> Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
> ---
>  drivers/thermal/intel/intel_powerclamp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c
> index b0eb5ec..ed46b5e 100644
> --- a/drivers/thermal/intel/intel_powerclamp.c
> +++ b/drivers/thermal/intel/intel_powerclamp.c
> @@ -578,7 +578,7 @@ static int powerclamp_cpu_online(unsigned int cpu)
>         return 0;
>  }
>
> -static int powerclamp_cpu_predown(unsigned int cpu)
> +static int powerclamp_cpu_predown(int cpu)
>  {
>         if (clamping == false)
>                 return 0;
> --

I'm not going to consider any patches of this type, because IMO they
are not improvements.

Thanks!