1 files changed, 21 insertions, 6 deletions

diff --git a/sound/synth/emux/emux_seq.c b/sound/synth/emux/emux_seq.c
index 188fda0effb0..a0209204ae48 100644
--- a/sound/synth/emux/emux_seq.c
+++ b/sound/synth/emux/emux_seq.c
@@ -267,8 +267,8 @@ snd_emux_event_input(struct snd_seq_event *ev, int direct, void *private_data,
 /*
  * increment usage count
  */
-int
-snd_emux_inc_count(struct snd_emux *emu)
+static int
+__snd_emux_inc_count(struct snd_emux *emu)
 {
         emu->used++;
         if (!try_module_get(emu->ops.owner))
@@ -282,12 +282,21 @@ snd_emux_inc_count(struct snd_emux *emu)
         return 1;
 }
 
+int snd_emux_inc_count(struct snd_emux *emu)
+{
+        int ret;
+
+        mutex_lock(&emu->register_mutex);
+        ret = __snd_emux_inc_count(emu);
+        mutex_unlock(&emu->register_mutex);
+        return ret;
+}
 
 /*
  * decrease usage count
  */
-void
-snd_emux_dec_count(struct snd_emux *emu)
+static void
+__snd_emux_dec_count(struct snd_emux *emu)
 {
         module_put(emu->card->module);
         emu->used--;
@@ -296,6 +305,12 @@ snd_emux_dec_count(struct snd_emux *emu)
         module_put(emu->ops.owner);
 }
 
+void snd_emux_dec_count(struct snd_emux *emu)
+{
+        mutex_lock(&emu->register_mutex);
+        __snd_emux_dec_count(emu);
+        mutex_unlock(&emu->register_mutex);
+}
 
 /*
  * Routine that is called upon a first use of a particular port
@@ -315,7 +330,7 @@ snd_emux_use(void *private_data, struct snd_seq_port_subscribe *info)
 
         mutex_lock(&emu->register_mutex);
         snd_emux_init_port(p);
-        snd_emux_inc_count(emu);
+        __snd_emux_inc_count(emu);
         mutex_unlock(&emu->register_mutex);
         return 0;
 }
@@ -338,7 +353,7 @@ snd_emux_unuse(void *private_data, struct snd_seq_port_subscribe *info)
 
         mutex_lock(&emu->register_mutex);
         snd_emux_sounds_off_all(p);
-        snd_emux_dec_count(emu);
+        __snd_emux_dec_count(emu);
         mutex_unlock(&emu->register_mutex);
         return 0;
 }