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backlight: Fix backlight limiting on spitz/corgi devices 

On spitz (& similar) machines, if battery is running low, backlight
needs
to be limited to lower step.  Unfortunately, current code uses &= for
limiting, turning backlight off completely for some backlight settings.
Fix that.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Pavel Machek 2009-11-06 15:58:31 +00:00 committed by Richard Purdie
parent 1e0fa6bd8c
commit 716bdf1874
1 changed files with 3 additions and 2 deletions
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5
drivers/video/backlight/corgi_lcd.c
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@ -433,8 +433,9 @@ static int corgi_bl_update_status(struct backlight_device *bd)
if (corgibl_flags & CORGIBL_SUSPENDED)
intensity = 0;
if (corgibl_flags & CORGIBL_BATTLOW)
intensity &= lcd->limit_mask;
if ((corgibl_flags & CORGIBL_BATTLOW) && intensity > lcd->limit_mask)
intensity = lcd->limit_mask;
return corgi_bl_set_intensity(lcd, intensity);
}