Symbol: UAC1_CHANNEL_MASK
drivers/usb/gadget/function/f_uac1.c
1186
} else if (opts->p_chmask & ~UAC1_CHANNEL_MASK) {
drivers/usb/gadget/function/f_uac1.c
1189
} else if (opts->c_chmask & ~UAC1_CHANNEL_MASK) {