--- zzzz-none-000/linux-5.4.213/sound/soc/soc-pcm.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/sound/soc/soc-pcm.c	2024-08-14 09:02:18.000000000 +0000
@@ -1201,6 +1201,8 @@
 		return;
 
 	be_substream = snd_soc_dpcm_get_substream(be, stream);
+	if (be_substream == NULL)
+		return;
 
 	for_each_dpcm_fe(be, stream, dpcm) {
 		if (dpcm->fe == fe)