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Subject[PATCH 4.14 035/164] ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit bbf038618a24d72e2efc19146ef421bb1e1eda1a upstream.

Just like many other Samsung models, the 670Z5E needs to use the acpi-video
backlight interface rather then the native one for backlight control to
work, add a quirk for this.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1557060
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/acpi/video_detect.c | 9 +++++++++
1 file changed, 9 insertions(+)

--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -220,6 +220,15 @@ static const struct dmi_system_id video_
},
},
{
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
+ .callback = video_detect_force_video,
+ .ident = "SAMSUNG 670Z5E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
+ },
+ },
+ {
/* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
.callback = video_detect_force_video,
.ident = "SAMSUNG 730U3E/740U3E",

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