1 files changed, 2 insertions, 2 deletions

diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c
index 6af50eb80ea7..fc470c60e433 100644
--- a/sound/firewire/bebob/bebob_maudio.c
+++ b/sound/firewire/bebob/bebob_maudio.c
@@ -379,12 +379,12 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl,
         struct special_params *params = bebob->maudio_special_quirk;
         int err, id;
 
-        mutex_lock(&bebob->mutex);
-
         id = uval->value.enumerated.item[0];
         if (id >= ARRAY_SIZE(special_clk_labels))
                 return 0;
 
+        mutex_lock(&bebob->mutex);
+
         err = avc_maudio_set_special_clk(bebob, id,
                                          params->dig_in_fmt,
                                          params->dig_out_fmt,