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Commit 780a6ec6 authored by Ash Willis's avatar Ash Willis Committed by Rafael J. Wysocki
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ACPI / video: ignore BIOS initial backlight value for HP Pavilion g6 

This patch addresses kernel bug 56661. BIOS reports an incorrect
backlight value, causing the driver to switch off the backlight
completely during startup. This patch ignores the incorrect value from
BIOS.

References: https://bugzilla.kernel.org/show_bug.cgi?id=56661


Signed-off-by: default avatarAsh Willis <ashwillis@programmer.net>
Cc: All <stable@vger.kernel.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent fedbe9bc

drivers/acpi/video.c

+8 −0
Original line number Diff line number Diff line
@@ -456,6 +456,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { 
		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),

		},

	},

	{

	 .callback = video_ignore_initial_backlight,

	 .ident = "HP Pavilion g6 Notebook PC",

	 .matches = {

		 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),

		 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),

		},

	},

	{

	 .callback = video_ignore_initial_backlight,

	 .ident = "HP 1000 Notebook PC",