This is a note to let you know that I've just added the patch titled
ACPI: video: Change Sony Vaio VPCEH3U1E quirk to force_native
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-video-change-sony-vaio-vpceh3u1e-quirk-to-force.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3c6d0b42d074656272094cccfcddb26604685f8a
Author: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Mon Nov 14 15:44:55 2022 +0100
ACPI: video: Change Sony Vaio VPCEH3U1E quirk to force_native
[ Upstream commit 84d56f326a8ef0071df8c0c3b983b9e2c3b73006 ]
According to: https://bugzilla.kernel.org/show_bug.cgi?id=202401
the Sony Vaio VPCEH3U1E quirk was added to disable the acpi_video0
backlight interface because that was not working, so that userspace
will pick the actually working native nv_backlight interface instead.
With the new kernel behavior of hiding native interfaces unless
acpi_video_get_backlight_type() returns native, the current
video_detect_force_vendor quirk will cause the working nv_backlight
interface will be disabled too.
Change the quirk to video_detect_force_native to get the desired
result of only registering the nv_backlight interface.
After this all currently remaining force_vendor quirks in
video_detect_dmi_table[] are there to prefer a vendor interface over
a non working ACPI video interface, add a comment to document this.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 375d1ef8fbea..0ab98f2e484c 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -132,6 +132,10 @@ static int video_detect_force_none(const struct dmi_system_id *d)
}
static const struct dmi_system_id video_detect_dmi_table[] = {
+ /*
+ * Models which should use the vendor backlight interface,
+ * because of broken ACPI video backlight control.
+ */
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1128309 */
.callback = video_detect_force_vendor,
@@ -224,14 +228,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
},
},
- {
- .callback = video_detect_force_vendor,
- /* Sony VPCEH3U1E */
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
- },
- },
{
.callback = video_detect_force_vendor,
/* Xiaomi Mi Pad 2 */
@@ -601,6 +597,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "N250P"),
},
},
+ {
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=202401 */
+ .callback = video_detect_force_native,
+ /* Sony Vaio VPCEH3U1E */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"),
+ },
+ },
/*
* These Toshibas have a broken acpi-video interface for brightness
