linux-kernel - Re: [PATCH v1] platform/x86: intel_pmc_core: promote S0ix failure warn() to WARN()

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Date:   Thu, 27 Oct 2022 11:51:15 -0400
From:   Sven van Ashbrook <svenva@...omium.org>
To:     "Limonciello, Mario" <Mario.Limonciello@....com>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        "S-k, Shyam-sundar" <Shyam-sundar.S-k@....com>,
        "rrangel@...omium.org" <rrangel@...omium.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...el.com>,
        Rafael J Wysocki <rjw@...ysocki.net>,
        Rajat Jain <rajatja@...gle.com>,
        David E Box <david.e.box@...el.com>,
        Mark Gross <markgross@...nel.org>,
        Rajneesh Bhardwaj <irenic.rajneesh@...il.com>
Subject: Re: [PATCH v1] platform/x86: intel_pmc_core: promote S0ix failure
 warn() to WARN()

On Thu, Oct 27, 2022 at 11:47 AM Limonciello, Mario
<Mario.Limonciello@....com> wrote:
>
> If we do make changes to this message level so that other infrastructure picks up I suggest
> we do it for both drivers.

Sounds good, patch feedback willing.

> WARN() is really only intended for internal kernel bugs and not for
> hw misbehaving, so I'm not a fan of the change you are suggesting here.

Thanks, I was not aware of this distinction. But it does look like upper-case
WARN is already used in many places to indicate hw misbehaving?

Here for example:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/platform/chrome/cros_ec.c?h=v6.1-rc2#n142