* as well.
*/
for (i = 0; i < num_pipes; i++) {
- pipe_ctx[i]->stream_res.tg->funcs->set_drr(
- pipe_ctx[i]->stream_res.tg, ¶ms);
-
- if (adjust.v_total_max != 0 && adjust.v_total_min != 0)
- pipe_ctx[i]->stream_res.tg->funcs->set_static_screen_control(
- pipe_ctx[i]->stream_res.tg,
- event_triggers, num_frames);
+ /* dc_state_destruct() might null the stream resources, so fetch tg
+ * here first to avoid a race condition. The lifetime of the pointee
+ * itself (the timing_generator object) is not a problem here.
+ */
+ struct timing_generator *tg = pipe_ctx[i]->stream_res.tg;
+
+ if ((tg != NULL) && tg->funcs) {
+ if (tg->funcs->set_drr)
+ tg->funcs->set_drr(tg, ¶ms);
+ if (adjust.v_total_max != 0 && adjust.v_total_min != 0)
+ if (tg->funcs->set_static_screen_control)
+ tg->funcs->set_static_screen_control(
+ tg, event_triggers, num_frames);
+ }
}
}