drm/exynos: print an error message when flipping a non-kds buffer

This message was handy in finding a bug.

BUG=chrome-os-partner:12170
TEST=compiles

Change-Id: Id9ec24d9dd341686cb44d079ac0630a87dec31c5
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/34193
Reviewed-by: Anush Elangovan <anush@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 6397372..1c7edc6 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -390,6 +390,7 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
                                  &dev_priv->kds_cb, crtc, fb, 1, shared,
                                  resource_list);
        } else {
+               DRM_ERROR("flipping a non-kds buffer\n");
                exynos_drm_kds_callback(crtc, fb);
        }
 #endif