Re: [PATCH] x86/intel_cacheinfo: remove redundant assignment to this_leaf

From: Borislav Petkov
Date: Sun Oct 15 2017 - 16:47:04 EST


On Sun, Oct 15, 2017 at 05:02:03PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> The variable this_leaf is being assigned a value that is never
> read and it is being updated a little later with a newer value,
> hence we can remove the redundant assignment.
>
> Cleans up clang warning: Value stored to 'this_leaf' is never read
>
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
> arch/x86/kernel/cpu/intel_cacheinfo.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
> index 24f749324c0f..9990a71e311f 100644
> --- a/arch/x86/kernel/cpu/intel_cacheinfo.c
> +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
> @@ -831,7 +831,6 @@ static int __cache_amd_cpumap_setup(unsigned int cpu, int index,
> } else if (boot_cpu_has(X86_FEATURE_TOPOEXT)) {
> unsigned int apicid, nshared, first, last;
>
> - this_leaf = this_cpu_ci->info_list + index;
> nshared = base->eax.split.num_threads_sharing + 1;
> apicid = cpu_data(cpu).apicid;
> first = apicid - (apicid % nshared);
> --

Looks ok to me.

Reviewed-by: Borislav Petkov <bp@xxxxxxx>

--
Regards/Gruss,
Boris.

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