Re: [PATCH V3] LoongArch: Fix cpu name after s3/s4

[WANG Xuerui]

On 9/29/22 16:55, Jianmin Lv wrote:
> On coming back from s3/s4, the cpu name will be overwritten
> in cpu_probe path of seconary cpu, so we don't overwrite it
> if it has been initialized.

The sentences are confusing, first "the CPU name will be overwritten" 
then "don't overwrite it if initialized" -- seems the CPU name will get 
overwritten despite the patch's clear intent.

Better to keep it simple: "Don't overwrite the CPU name on coming back 
from S3/S4 if it is already initialized."

> Signed-off-by: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
>
> diff --git a/arch/loongarch/kernel/cpu-probe.c b/arch/loongarch/kernel/cpu-probe.c
> index 529ab8f44ec6..255a09876ef2 100644
> --- a/arch/loongarch/kernel/cpu-probe.c
> +++ b/arch/loongarch/kernel/cpu-probe.c
> @@ -187,7 +187,9 @@ static inline void cpu_probe_loongson(struct cpuinfo_loongarch *c, unsigned int
>   	uint64_t *vendor = (void *)(&cpu_full_name[VENDOR_OFFSET]);
>   	uint64_t *cpuname = (void *)(&cpu_full_name[CPUNAME_OFFSET]);
>   
> -	__cpu_full_name[cpu] = cpu_full_name;
> +	if (!__cpu_full_name[cpu])
> +		__cpu_full_name[cpu] = cpu_full_name;
> +
>   	*vendor = iocsr_read64(LOONGARCH_IOCSR_VENDOR);
>   	*cpuname = iocsr_read64(LOONGARCH_IOCSR_CPUNAME);
>   

Otherwise LGTM.

Reviewed-by: WANG Xuerui <git@xxxxxxxxxx>

--
WANG "xen0n" Xuerui

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