linux-kernel - Re: [PATCH] platform/x86: dell-laptop: Add drm module soft dependency

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Message-ID: <20230607052724.GA29834@srcf.ucam.org>
Date:   Wed, 7 Jun 2023 06:27:24 +0100
From:   Matthew Garrett <mjg59@...f.ucam.org>
To:     AceLan Kao <acelan.kao@...onical.com>
Cc:     Pali Rohár <pali@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kai-Heng Feng <kai.heng.feng@...onical.com>
Subject: Re: [PATCH] platform/x86: dell-laptop: Add drm module soft dependency

On Wed, Jun 07, 2023 at 01:19:40PM +0800, AceLan Kao wrote:
> Gfx drivers(i915/amdgpu/nvidia) depend on the drm driver, so delaying
> the loading of dell_laptop after drm can ease the issue the most.
> Right, it's still possible to encounter the issue, unfortunately, we
> do not have a better solution for it at the moment.

We could unregister inappropriate backlight drivers when a more 
appropriate one is loaded, or the policy decision around which driver to 
use could be made in userland?