drm/atomic-helper: Fix commit_tail state variable name

Even though the commit_tail () drm_atomic_state parameter is called
old_state, it's actually the state being committed which is confusing.

It's even more confusing since the atomic_commit_tail hook being called
by commit_tail() parameter is called state.

Let's rename the variable from old_state to state to make it less
confusing.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-6-e71598f49c8f@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>

Author: mripard

drivers/gpu/drm/drm_atomic_helper.c

@@ -1830,9 +1830,9 @@ void drm_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
 }
 EXPORT_SYMBOL(drm_atomic_helper_commit_tail_rpm);
 
-static void commit_tail(struct drm_atomic_state *old_state)
+static void commit_tail(struct drm_atomic_state *state)
 {
-	struct drm_device *dev = old_state->dev;
+	struct drm_device *dev = state->dev;
 	const struct drm_mode_config_helper_funcs *funcs;
 	struct drm_crtc_state *new_crtc_state;
 	struct drm_crtc *crtc;
@@ -1854,33 +1854,33 @@ static void commit_tail(struct drm_atomic_state *old_state)
 	 */
 	start = ktime_get();
 
-	drm_atomic_helper_wait_for_fences(dev, old_state, false);
+	drm_atomic_helper_wait_for_fences(dev, state, false);
 
-	drm_atomic_helper_wait_for_dependencies(old_state);
+	drm_atomic_helper_wait_for_dependencies(state);
 
 	/*
 	 * We cannot safely access new_crtc_state after
 	 * drm_atomic_helper_commit_hw_done() so figure out which crtc's have
 	 * self-refresh active beforehand:
 	 */
-	for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i)
+	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
 		if (new_crtc_state->self_refresh_active)
 			new_self_refresh_mask |= BIT(i);
 
 	if (funcs && funcs->atomic_commit_tail)
-		funcs->atomic_commit_tail(old_state);
+		funcs->atomic_commit_tail(state);
 	else
-		drm_atomic_helper_commit_tail(old_state);
+		drm_atomic_helper_commit_tail(state);
 
 	commit_time_ms = ktime_ms_delta(ktime_get(), start);
 	if (commit_time_ms > 0)
-		drm_self_refresh_helper_update_avg_times(old_state,
+		drm_self_refresh_helper_update_avg_times(state,
 						 (unsigned long)commit_time_ms,
 						 new_self_refresh_mask);
 
-	drm_atomic_helper_commit_cleanup_done(old_state);
+	drm_atomic_helper_commit_cleanup_done(state);
 
-	drm_atomic_state_put(old_state);
+	drm_atomic_state_put(state);
 }
 
 static void commit_work(struct work_struct *work)