From b4df463678fb9c6dae9548dbb7545993779fd416 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Mon, 15 Dec 2014 16:01:29 +0800 Subject: [PATCH] ACPI / video: update the skip case for acpi_video_device_in_dod() If the firmware has declared more than 8 video output devices, and the one that control the internal panel's backlight is listed after the first 8 output devices, the _DOD will not include it due to the current i915 operation region implementation. As a result, we will not create a backlight device for it while we should. Solve this problem by special case the firmware that has 8+ output devices in that if we see such a firmware, we do not test if the device is in _DOD list. The creation of the backlight device will also enable the firmware to emit events on backlight hotkey press when the acpi_osi= cmdline option is specified on those affected ASUS laptops. Link: https://bugzilla.kernel.org/show_bug.cgi?id=70241 Reported-and-tested-by: Oleksij Rempel Reported-and-tested-by: Dmitry Tunin Reported-and-tested-by: Jimbo Cc: 3.18+ # 3.18+ Signed-off-by: Aaron Lu Acked-by: Jani Nikula Signed-off-by: Rafael J. Wysocki --- Reading git-format-patch failed