1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index e27c17012628..0f2db1648f04 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -154,6 +154,8 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
         struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
         u32 max;
 
+        DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
+
         if (!(bclp & ASLE_BCLP_VALID))
                 return ASLE_BACKLIGHT_FAILED;