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>
diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
index 2211a85..9677494 100644
--- a/drivers/video/backlight/corgi_lcd.c
+++ b/drivers/video/backlight/corgi_lcd.c
@@ -433,8 +433,9 @@
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);
}