1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index cfb8fb68f09c..119771ff46ab 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -173,7 +173,7 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
                 return ASLE_BACKLIGHT_FAILED;
 
         intel_panel_set_backlight(dev, bclp, 255);
-        iowrite32((bclp*0x64)/0xff | ASLE_CBLV_VALID, &asle->cblv);
+        iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv);
 
         return 0;
 }