diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 0a1798eafb0b5400a0cceea85c072aa0e805f31a..699d2890535ccb9a5280ce6173980308602d6c26 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -2872,7 +2872,7 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
 			setup = kmalloc(sizeof(*setup), GFP_KERNEL);
 			if (! setup) {
 				buffer->error = -ENOMEM;
-				mutex_lock(&pstr->oss.setup_mutex);
+				mutex_unlock(&pstr->oss.setup_mutex);
 				return;
 			}
 			if (pstr->oss.setup_list == NULL)
@@ -2886,7 +2886,7 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
 			if (! template.task_name) {
 				kfree(setup);
 				buffer->error = -ENOMEM;
-				mutex_lock(&pstr->oss.setup_mutex);
+				mutex_unlock(&pstr->oss.setup_mutex);
 				return;
 			}
 		}