If CONFIG_BACKLIGHT_CLASS_DEVICE is disabled then GCC warns that: drivers/gpu/drm/gma500/opregion.c:154:6: warning: unused variable ‘max’ [-Wunused-variable]
Which give me a chance to use the new config_enabled() macro. :)
Signed-off-by: Dan Carpenter dan.carpenter@oracle.com
diff --git a/drivers/gpu/drm/gma500/opregion.c b/drivers/gpu/drm/gma500/opregion.c index 05661bf..d2125ba 100644 --- a/drivers/gpu/drm/gma500/opregion.c +++ b/drivers/gpu/drm/gma500/opregion.c @@ -151,7 +151,6 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) struct drm_psb_private *dev_priv = dev->dev_private; struct opregion_asle *asle = dev_priv->opregion.asle; struct backlight_device *bd = dev_priv->backlight_device; - u32 max;
DRM_DEBUG_DRIVER("asle set backlight %x\n", bclp);
@@ -165,11 +164,12 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) if (bclp > 255) return ASLE_BACKLIGHT_FAILED;
-#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE - max = bd->props.max_brightness; - bd->props.brightness = bclp * max / 255; - backlight_update_status(bd); -#endif + if (config_enabled(CONFIG_BACKLIGHT_CLASS_DEVICE)) { + int max = bd->props.max_brightness; + bd->props.brightness = bclp * max / 255; + backlight_update_status(bd); + } + asle->cblv = (bclp * 0x64) / 0xff | ASLE_CBLV_VALID;
return 0;