Commit 5959ddd0 authored by Michał Kępień's avatar Michał Kępień Committed by Darren Hart (VMware)

platform/x86: fujitsu-laptop: account for backlight power when determining brightness

The comment for the get_brightness backlight device callback in
include/linux/backlight.h states that it should "return the current
backlight brightness (accounting for power, fb_blank etc.)".
fujitsu-laptop violates that premise by simply returning the value to
which ACPI function GBLL evaluates to.  Make sure 0 is returned when
backlight power is turned off.
Signed-off-by: default avatarMichał Kępień <kernel@kempniu.pl>
Reviewed-by: default avatarJonathan Woithe <jwoithe@just42.net>
Signed-off-by: default avatarDarren Hart (VMware) <dvhart@infradead.org>
parent d75a4a97
...@@ -423,7 +423,7 @@ static int get_max_brightness(void) ...@@ -423,7 +423,7 @@ static int get_max_brightness(void)
static int bl_get_brightness(struct backlight_device *b) static int bl_get_brightness(struct backlight_device *b)
{ {
return get_lcd_level(); return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level();
} }
static int bl_update_status(struct backlight_device *b) static int bl_update_status(struct backlight_device *b)
......
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