drm/i915: Simplify control flow in intel_atomic_check a bit.

- Unconditionally add plane states. Core helpers would have done this
  in drm_atomic_helper_check_modeset, doing it once more won't cause
  harm and is less fragile.

- Simplify the continue logic when disabling a pipe.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1462779085-2458-1-git-send-email-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b8a0aba..bcf7cfc 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13351,14 +13351,13 @@ static int intel_atomic_check(struct drm_device *dev,
                if (crtc_state->mode.private_flags != crtc->state->mode.private_flags)
                        crtc_state->mode_changed = true;
 
-               if (!crtc_state->enable) {
-                       if (needs_modeset(crtc_state))
-                               any_ms = true;
+               if (!needs_modeset(crtc_state))
                        continue;
-               }
 
-               if (!needs_modeset(crtc_state))
+               if (!crtc_state->enable) {
+                       any_ms = true;
                        continue;
+               }
 
                /* FIXME: For only active_changed we shouldn't need to do any
                 * state recomputation at all. */
@@ -13382,13 +13381,12 @@ static int intel_atomic_check(struct drm_device *dev,
                        to_intel_crtc_state(crtc_state)->update_pipe = true;
                }
 
-               if (needs_modeset(crtc_state)) {
+               if (needs_modeset(crtc_state))
                        any_ms = true;
 
-                       ret = drm_atomic_add_affected_planes(state, crtc);
-                       if (ret)
-                               return ret;
-               }
+               ret = drm_atomic_add_affected_planes(state, crtc);
+               if (ret)
+                       return ret;
 
                intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
                                       needs_modeset(crtc_state) ?