usb_ac_set_gain
static int usb_ac_set_gain(usb_ac_state_t *, uint_t,
if (usb_ac_set_gain(uacp, id, dir, channel,
if (usb_ac_set_gain(uacp, id, dir,
USB_AC_FIND_ALL, &count, left, usb_ac_set_gain);
USB_AC_FIND_ALL, &count, right, usb_ac_set_gain);
USB_AC_FIND_ALL, &count, left, usb_ac_set_gain);
USB_AC_FIND_ALL, &count, right, usb_ac_set_gain);
USB_AC_FIND_ALL, &count, gain, usb_ac_set_gain);
USB_AC_FIND_ALL, &count, gain, usb_ac_set_gain);