linux-kernel - [PATCH AUTOSEL 4.9 1/4] ACPI: video: Add Toshiba Satellite/Portege Z830 quirk

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Message-Id: <20221009205508.1204042-1-sashal@kernel.org>
Date:   Sun,  9 Oct 2022 16:55:05 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Arvid Norlander <lkml@...pal.se>,
        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 4.9 1/4] ACPI: video: Add Toshiba Satellite/Portege Z830 quirk

From: Arvid Norlander <lkml@...pal.se>

[ Upstream commit 574160b8548deff8b80b174f03201e94ab8431e2 ]

Toshiba Satellite Z830 needs the quirk video_disable_backlight_sysfs_if
for proper backlight control after suspend/resume cycles.

Toshiba Portege Z830 is simply the same laptop rebranded for certain
markets (I looked through the manual to other language sections to confirm
this) and thus also needs this quirk.

Thanks to Hans de Goede for suggesting this fix.

Link: https://www.spinics.net/lists/platform-driver-x86/msg34394.html
Suggested-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Arvid Norlander <lkml@...pal.se>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Tested-by: Arvid Norlander <lkml@...pal.se>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/acpi/acpi_video.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index ea0573176894..209903c2ee85 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -485,6 +485,22 @@ static struct dmi_system_id video_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE R830"),
 		},
 	},
+	{
+	 .callback = video_disable_backlight_sysfs_if,
+	 .ident = "Toshiba Satellite Z830",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE Z830"),
+		},
+	},
+	{
+	 .callback = video_disable_backlight_sysfs_if,
+	 .ident = "Toshiba Portege Z830",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE Z830"),
+		},
+	},
 	/*
 	 * Some machine's _DOD IDs don't have bit 31(Device ID Scheme) set
 	 * but the IDs actually follow the Device ID Scheme.
-- 
2.35.1