[Intel-gfx] [PATCH 02/19] drm/atomic-helper: Make crtc helper funcs optional

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Allow drivers to call drm_atomic_helper_check_modeset() without
having the crtc helper funcs specified. i915 doesn't need those
anymore.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index aa16ea17ff9b..fb2ce692ae5b 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -481,7 +481,7 @@ mode_fixup(struct drm_atomic_state *state)
 			continue;
 
 		funcs = crtc->helper_private;
-		if (!funcs->mode_fixup)
+		if (!funcs || !funcs->mode_fixup)
 			continue;
 
 		ret = funcs->mode_fixup(crtc, &new_crtc_state->mode,
-- 
2.21.0