Re: [PATCH AUTOSEL 5.13 31/59] platform/x86: asus-nb-wmi: Revert "add support for ASUS ROG Zephyrus G14 and G15"

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On Mon, Jul 05, 2021 at 07:09:03PM +0200, Hans de Goede wrote:
Hi,

On 7/5/21 7:08 PM, Hans de Goede wrote:
Hi,

On 7/5/21 5:27 PM, Sasha Levin wrote:
From: "Luke D. Jones" <luke@xxxxxxxxxx>

[ Upstream commit 28117f3a5c3c8375a3304af76357d5bf9cf30f0b ]

The quirks added to asus-nb-wmi for the ASUS ROG Zephyrus G14 and G15 are
wrong, they tell the asus-wmi code to use the vendor specific WMI backlight
interface. But there is no such interface on these laptops.

As a side effect, these quirks stop the acpi_video driver to register since
they make acpi_video_get_backlight_type() return acpi_backlight_vendor,
leaving only the native AMD backlight driver in place, which is the one we
want. This happy coincidence is being replaced with a new quirk in
drivers/acpi/video_detect.c which actually sets the backlight_type to
acpi_backlight_native fixinf this properly. This reverts
commit 13bceda68fb9 ("platform/x86: asus-nb-wmi: add support for ASUS ROG
Zephyrus G14 and G15").

Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210419074915.393433-3-luke@xxxxxxxxxx
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

Note this should only be cherry-picked if commit 2dfbacc65d1d
("ACPI: video: use native backlight for GA401/GA502/GA503"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2dfbacc65d1d2eae587ccb6b93f6280542641858

Is also being cherry-picked, since the quirk added in that commit
replaces the quirks which are being reverted here.

p.s.

The same remark also replies to the 5.12 and 5.10 cherry-picks of
this commit.

I'll take it too, thanks!

--
Thanks,
Sasha



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