diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 4aaeb11..ad30fb1 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2525,6 +2525,8 @@ bool rv770_dpm_vblank_too_short(struct radeon_device *rdev)
 	u32 vblank_time = r600_dpm_get_vblank_time(rdev);
 	u32 switch_limit = 300;
 
+	DRM_INFO("vblank_time: %u\n", vblank_time);
+
 	/* quirks */
 	/* ASUS K70AF */
 	if ((rdev->pdev->device == 0x9553) &&