Re: [PATCH] cpufreq/amd-pstate: Add POWER_SUPPLY dependency for dynamic EPP

[K Prateek Nayak]

Hello Mario,

On 4/7/2026 8:24 PM, Mario Limonciello wrote:
>  config X86_AMD_PSTATE_DYNAMIC_EPP
>  	bool "AMD Processor P-State dynamic EPP support"
> -	depends on X86_AMD_PSTATE
> +	depends on X86_AMD_PSTATE && POWER_SUPPLY

This config only controls the default selection right? The offending
power_supply_{reg,unreg}_notifier() isn't guarded behind
#ifdef CONFIG_X86_AMD_PSTATE_DYNAMIC_EPP so we'll still run into this.

I thing X86_AMD_PSTATE doing a "select POWER_SUPPLY" should cure this.
Thoughts?

>  	default n
>  	help
>  	  Allow the kernel to dynamically change the energy performance

-- 
Thanks and Regards,
Prateek