Commit a2fc3c89 authored by Hans de Goede's avatar Hans de Goede
Browse files

ACPI: video: Drop backlight_device_get_by_type() call from acpi_video_get_backlight_type() 



All x86/ACPI kms drivers which register native/BACKLIGHT_RAW type
backlight devices call acpi_video_backlight_use_native() now. This sets
__acpi_video_get_backlight_type()'s internal static native_available flag.

This makes the backlight_device_get_by_type(BACKLIGHT_RAW) check
unnecessary.

Relying on the cached native_available value not only is simpler, it will
also work correctly in cases where then native backlight registration was
skipped because of acpi_video_backlight_use_native() returning false.

Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 7f908d33

drivers/acpi/video_detect.c

+1 −2
Original line number Diff line number Diff line
@@ -608,8 +608,7 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) 
	if (!(video_caps & ACPI_VIDEO_BACKLIGHT))

		return acpi_backlight_vendor;



	if (acpi_osi_is_win8() &&

	    (native_available || backlight_device_get_by_type(BACKLIGHT_RAW)))

	if (acpi_osi_is_win8() && native_available)

		return acpi_backlight_native;



	return acpi_backlight_video;