snd_usb_mixer_set_ctl_value
if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
err = snd_usb_mixer_set_ctl_value(cval,
int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR,