linux-kernel - Re: [PATCH V5 16/20] platform/x86/intel/pmc: Display LPM requirements for multiple PMCs

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Date:   Thu, 23 Nov 2023 16:08:23 +0200 (EET)
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     "David E. Box" <david.e.box@...ux.intel.com>
cc:     LKML <linux-kernel@...r.kernel.org>,
        platform-driver-x86@...r.kernel.org, rajvi.jingar@...ux.intel.com
Subject: Re: [PATCH V5 16/20] platform/x86/intel/pmc: Display LPM requirements
 for multiple PMCs

On Wed, 22 Nov 2023, David E. Box wrote:

> From: Rajvi Jingar <rajvi.jingar@...ux.intel.com>
> 
> Update the substate_requirements attribute to display the requirements for
> all the PMCs on a package.
> 
> Signed-off-by: Rajvi Jingar <rajvi.jingar@...ux.intel.com>
> Signed-off-by: David E. Box <david.e.box@...ux.intel.com>
> ---

This change looked fine.

However, I spent considerable time in figuring out the addition of 
lpm_req_regs NULL check so it would be nice to mention it in the commit 
message that since the caller's primary_pmc->lpm_req_regs check no longer 
covers all pmcs, it has to checked within the loop. It's was far from 
obvious whether it was a bugfix accidently mixed together with this patch 
or required by this change itself but I managed to finally convince 
myself it's the latter.

With that noted down for the benefit of the next unfortunate victim who 
has to read this change from the git history, :-)

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

-- 
 i.