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ACPI video: ignore BIOS backlight value for HP dm4 

On a HP Pavilion dm4 laptop the BIOS sets minimum backlight on boot,
completely dimming the screen. Ignore this initial value for this
machine.

Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Gustavo Maciel Dias Vieira 2013-03-04 15:23:37 +00:00 committed by Rafael J. Wysocki
parent 8bb9660418
commit 771d09b3c4
1 changed files with 8 additions and 0 deletions
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8
drivers/acpi/video.c
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@ -447,6 +447,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"),
}, },
}, },
{
.callback = video_ignore_initial_backlight,
.ident = "HP Pavilion dm4",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),
},
},
{} {}
}; };