linux-kernel - Re: [PATCH 2/2] platform/x86: panasonic-laptop: allow to use all hotkeys

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Date:   Wed, 15 Jun 2022 13:21:46 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     stefan.seyfried@...glemail.com
Cc:     Kenneth Chan <kenneth.t.chan@...il.com>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stefan Seyfried <seife+kernel@...systems.com>
Subject: Re: [PATCH 2/2] platform/x86: panasonic-laptop: allow to use all hotkeys

On Sun, Jun 12, 2022 at 3:54 PM <stefan.seyfried@...glemail.com> wrote:
>
> From: Stefan Seyfried <seife+kernel@...systems.com>
>
> commit ed83c9171829 broke the hotkeys on my Toughbook CF-51.

The commit

> I'm questioning the general validity of that commit, but as I only
> have a single machine to test, add a module parameter to allow making
> it work at runtime.

Thanks for the report and the fix, my comments below.

> +static bool hotkey_input;
> +module_param(hotkey_input, bool, 0644);
> +MODULE_PARM_DESC(hotkey_input, "Send all hotkeys to the input subsystem");

We usually add module options in very bad cases where it's very useful
for debugging or when some devices require the opposite settings while
can't be distinguished automatically. Here I do not see either of such
cases. Hence, I would prefer to see a DMI based quirk as it's done a
lot in the PDx86 drivers. Can you do that?

-- 
With Best Regards,
Andy Shevchenko