Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 7 Jun 2023 05:20:32 +0100
From:   Matthew Garrett <mjg59@srcf.ucam.org>
To:     AceLan Kao <acelan.kao@canonical.com>
Cc:     Pali =?iso-8859-1?Q?Roh=E1r?= <pali@kernel.org>,
        Hans de Goede <hdegoede@redhat.com>,
        Mark Gross <markgross@kernel.org>,
        platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] platform/x86: dell-laptop: Add drm module soft dependency
Message-ID: <20230607042032.GA28835@srcf.ucam.org>
References: <20230607034331.576623-1-acelan.kao@canonical.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230607034331.576623-1-acelan.kao@canonical.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Precedence: bulk

On Wed, Jun 07, 2023 at 11:43:31AM +0800, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com>
> 
> dell_laptop is somethines loaded before nvidia driver, causing it to
> create its own backlight interface before native backlight is set.
> This results in the presence of 2 backlight interfaces in sysfs and
> leads to the backlight can't be adjusted.

It seems like this approach would still be broken if the nvidia module 
isn't available at the time the dell module is loaded?