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-rw-r--r--sound/usb/mixer.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
index 37e1b234c802..65d6d08c96f5 100644
--- a/sound/usb/mixer.h
+++ b/sound/usb/mixer.h
@@ -116,6 +116,6 @@ int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
extern void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl);
-extern struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
+extern const struct snd_kcontrol_new *snd_usb_feature_unit_ctl;
#endif /* __USBMIXER_H */