linux-kernel - [PATCH AUTOSEL 4.19 12/13] ACPI: video: Fix Lenovo Ideapad Z570 DMI match

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Message-Id: <20230226145217.829485-12-sashal@kernel.org>
Date:   Sun, 26 Feb 2023 09:52:14 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <sashal@...nel.org>, rafael@...nel.org,
        linux-acpi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 12/13] ACPI: video: Fix Lenovo Ideapad Z570 DMI match

From: Hans de Goede <hdegoede@...hat.com>

[ Upstream commit 2d11eae42d52a131f06061015e49dc0f085c5bfc ]

Multiple Ideapad Z570 variants need acpi_backlight=native to force native
use on these pre Windows 8 machines since acpi_video backlight control
does not work here.

The original DMI quirk matches on a product_name of "102434U" but other
variants may have different product_name-s such as e.g. "1024D9U".

Move to checking product_version instead as is more or less standard for
Lenovo DMI quirks for similar reasons.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/acpi/video_detect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 0ec74ab2a3995..b4f16073ef432 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -300,7 +300,7 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 	 .ident = "Lenovo Ideapad Z570",
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "102434U"),
+		DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
 		},
 	},
 	{
-- 
2.39.0