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Commit 0b7ef21b authored by Alex Hung's avatar Alex Hung Committed by Greg Kroah-Hartman
Browse files

ACPI: video: use ACPI backlight for HP 635 Notebook 

commit b226faab4e7890bbbccdf794e8b94276414f9058 upstream.

The default backlight interface is AMD's radeon_bl0 which does not
work on this system, so use the ACPI backlight interface on it
instead.

BugLink: https://bugs.launchpad.net/bugs/1894667


Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: default avatarAlex Hung <alex.hung@canonical.com>
[ rjw: Changelog edits ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 87eae076

drivers/acpi/video_detect.c

+9 −0
Original line number Diff line number Diff line
@@ -274,6 +274,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { 
		DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),

		},

	},

	/* https://bugs.launchpad.net/bugs/1894667 */

	{

	 .callback = video_detect_force_video,

	 .ident = "HP 635 Notebook",

	 .matches = {

		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),

		DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),

		},

	},



	/* Non win8 machines which need native backlight nevertheless */

	{