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-rw-r--r--sound/usb/mixer.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
index 26c636c5c93a..b4a2c8165e4b 100644
--- a/sound/usb/mixer.h
+++ b/sound/usb/mixer.h
@@ -52,5 +52,7 @@ void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid);
int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
int request, int validx, int value_set);
+void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer);
+int snd_usb_mixer_activate(struct usb_mixer_interface *mixer);
#endif /* __USBMIXER_H */