drm/atomic-helper: Change parameter name of drm_atomic_helper_commit_writebacks()

drm_atomic_helper_commit_writebacks() updates all writeback connectors
affected by a new commit. It takes the drm_atomic_state being committed
as a parameter.

However, that parameter name is called (and documented) as old_state,
which is pretty confusing. Let's rename that variable as state.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-20-e71598f49c8f@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>

Author: mripard

drivers/gpu/drm/drm_atomic_helper.c

@@ -1463,13 +1463,13 @@ void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
 EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables);
 
 static void drm_atomic_helper_commit_writebacks(struct drm_device *dev,
-						struct drm_atomic_state *old_state)
+						struct drm_atomic_state *state)
 {
 	struct drm_connector *connector;
 	struct drm_connector_state *new_conn_state;
 	int i;
 
-	for_each_new_connector_in_state(old_state, connector, new_conn_state, i) {
+	for_each_new_connector_in_state(state, connector, new_conn_state, i) {
 		const struct drm_connector_helper_funcs *funcs;
 
 		funcs = connector->helper_private;
@@ -1478,7 +1478,7 @@ static void drm_atomic_helper_commit_writebacks(struct drm_device *dev,
 
 		if (new_conn_state->writeback_job && new_conn_state->writeback_job->fb) {
 			WARN_ON(connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
-			funcs->atomic_commit(connector, old_state);
+			funcs->atomic_commit(connector, state);
 		}
 	}
 }