drm/i915/display: remove intel_display_commit_duplicated_state()

This seems like an unnecessary wrapper layer. Removing it will be
helpful later.
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a38f08e259221d71314ce6d764431147b0fba218.1681465222.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_display.c

@@ -701,20 +701,6 @@ intel_plane_fence_y_offset(const struct intel_plane_state *plane_state)
 	return y;
 }
 
-static int
-intel_display_commit_duplicated_state(struct intel_atomic_state *state,
-				      struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-	int ret;
-
-	ret = drm_atomic_helper_commit_duplicated_state(&state->base, ctx);
-
-	drm_WARN_ON(&i915->drm, ret == -EDEADLK);
-
-	return ret;
-}
-
 static int
 __intel_display_resume(struct drm_i915_private *i915,
 		       struct drm_atomic_state *state,
@@ -722,7 +708,7 @@ __intel_display_resume(struct drm_i915_private *i915,
 {
 	struct drm_crtc_state *crtc_state;
 	struct drm_crtc *crtc;
-	int i;
+	int ret, i;
 
 	intel_modeset_setup_hw_state(i915, ctx);
 	intel_vga_redisable(i915);
@@ -748,7 +734,11 @@ __intel_display_resume(struct drm_i915_private *i915,
 	if (!HAS_GMCH(i915))
 		to_intel_atomic_state(state)->skip_intermediate_wm = true;
 
-	return intel_display_commit_duplicated_state(to_intel_atomic_state(state), ctx);
+	ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
+
+	drm_WARN_ON(&i915->drm, ret == -EDEADLK);
+
+	return ret;
 }
 
 static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
@@ -839,10 +829,12 @@ void intel_display_finish_reset(struct drm_i915_private *i915)
 	/* reset doesn't touch the display */
 	if (!gpu_reset_clobbers_display(i915)) {
 		/* for testing only restore the display */
-		ret = intel_display_commit_duplicated_state(to_intel_atomic_state(state), ctx);
-		if (ret)
+		ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
+		if (ret) {
+			drm_WARN_ON(&i915->drm, ret == -EDEADLK);
 			drm_err(&i915->drm,
 				"Restoring old state failed with %i\n", ret);
+		}
 	} else {
 		/*
 		 * The display has been reset as well,