1 files changed, 6 insertions, 1 deletions

diff --git a/include/sound/control.h b/include/sound/control.h
index b2796e83c7ac..8332e865c759 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -40,7 +40,7 @@ struct snd_kcontrol_new {
         snd_ctl_elem_iface_t iface;     /* interface identifier */
         unsigned int device;            /* device/client number */
         unsigned int subdevice;         /* subdevice (substream) number */
-        unsigned char *name;            /* ASCII name of item */
+        const unsigned char *name;      /* ASCII name of item */
         unsigned int index;             /* index of item */
         unsigned int access;            /* access rights */
         unsigned int count;             /* count of same elements */
@@ -227,6 +227,11 @@ snd_ctl_add_slave_uncached(struct snd_kcontrol *master,
         return _snd_ctl_add_slave(master, slave, SND_CTL_SLAVE_NEED_UPDATE);
 }
 
+int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl,
+                             void (*hook)(void *private_data, int),
+                             void *private_data);
+void snd_ctl_sync_vmaster_hook(struct snd_kcontrol *kctl);
+
 /*
  * Helper functions for jack-detection controls
  */