--- zzzz-none-000/linux-5.4.213/sound/core/pcm.c	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/sound/core/pcm.c	2024-05-29 11:20:02.000000000 +0000
@@ -692,6 +692,9 @@
 		}
 		substream->group = &substream->self_group;
 		snd_pcm_group_init(&substream->self_group);
+#ifdef CONFIG_AUDIO_QGKI
+		spin_lock_init(&substream->runtime_lock);
+#endif
 		list_add_tail(&substream->link_list, &substream->self_group.substreams);
 		atomic_set(&substream->mmap_count, 0);
 		prev = substream;
@@ -985,9 +988,15 @@
 void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime;
+#ifdef CONFIG_AUDIO_QGKI
+	unsigned long flags = 0;
+#endif
 
 	if (PCM_RUNTIME_CHECK(substream))
 		return;
+#ifdef CONFIG_AUDIO_QGKI
+	spin_lock_irqsave(&substream->runtime_lock, flags);
+#endif
 	runtime = substream->runtime;
 	if (runtime->private_free != NULL)
 		runtime->private_free(runtime);
@@ -1007,6 +1016,9 @@
 	put_pid(substream->pid);
 	substream->pid = NULL;
 	substream->pstr->substream_opened--;
+#ifdef CONFIG_AUDIO_QGKI
+	spin_unlock_irqrestore(&substream->runtime_lock, flags);
+#endif
 }
 
 static ssize_t show_pcm_class(struct device *dev,