received_fcs 214 drivers/tty/n_gsm.c u8 received_fcs; received_fcs 1757 drivers/tty/n_gsm.c gsm->fcs = gsm_fcs_add(gsm->fcs, gsm->received_fcs); received_fcs 1916 drivers/tty/n_gsm.c gsm->received_fcs = c;