Re: [PATCH v2 1/5] riscv: drop cpufeature_apply_feature tracking variable

[Guo Ren]

Safe modification.

Reviewed-by: Guo Ren <guoren@xxxxxxxxxx>

On Fri, May 27, 2022 at 4:57 AM Heiko Stuebner <heiko@xxxxxxxxx> wrote:
>
> The variable was tracking which feature patches got applied
> but that information was never actually used - and thus resulted
> in a warning as well.
>
> Drop the variable.
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
> ---
>  arch/riscv/kernel/cpufeature.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index dea3ea19deee..b33564df81e1 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -294,7 +294,6 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin,
>                                                   unsigned int stage)
>  {
>         u32 cpu_req_feature = cpufeature_probe(stage);
> -       u32 cpu_apply_feature = 0;
>         struct alt_entry *alt;
>         u32 tmp;
>
> @@ -308,10 +307,8 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin,
>                 }
>
>                 tmp = (1U << alt->errata_id);
> -               if (cpu_req_feature & tmp) {
> +               if (cpu_req_feature & tmp)
>                         patch_text_nosync(alt->old_ptr, alt->alt_ptr, alt->alt_len);
> -                       cpu_apply_feature |= tmp;
> -               }
>         }
>  }
>  #endif
> --
> 2.35.1
>


-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/