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Sender: AceLan Kao <acelan@gmail.com>
From:   AceLan Kao <acelan.kao@canonical.com>
To:     Matthew Garrett <mjg59@srcf.ucam.org>,
        =?UTF-8?q?Pali=20Roh=C3=A1r?= <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: [PATCH] platform/x86: dell-laptop: Add drm module soft dependency
Date:   Wed,  7 Jun 2023 11:43:31 +0800
Message-Id: <20230607034331.576623-1-acelan.kao@canonical.com>
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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.
To work around this issue, delaying the loading of dell_laptop until
after drm module has been loaded.

Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
---
 drivers/platform/x86/dell/dell-laptop.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/dell/dell-laptop.c b/drivers/platform/x86/dell/dell-laptop.c
index 1321687d923e..535e6c3df529 100644
--- a/drivers/platform/x86/dell/dell-laptop.c
+++ b/drivers/platform/x86/dell/dell-laptop.c
@@ -2316,6 +2316,7 @@ static void __exit dell_exit(void)
 late_initcall(dell_init);
 module_exit(dell_exit);
 
+MODULE_SOFTDEP("post: drm");
 MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
 MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
 MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
-- 
2.34.1