270 	uint8_t fcs;  in modem_cmux_transmit_frame()  local
297 	/* Compute FCS for the header (exclude SOF) */  in modem_cmux_transmit_frame()
298 	fcs = crc8_rohc(MODEM_CMUX_FCS_INIT_VALUE, &buf[1], (buf_idx - 1));  in modem_cmux_transmit_frame()
300 	/* FCS final */  in modem_cmux_transmit_frame()
302 		fcs = 0xFF - fcs;  in modem_cmux_transmit_frame()
304 		fcs = 0xFF - crc8_rohc(fcs, frame->data, data_len);  in modem_cmux_transmit_frame()
313 	/* FCS and EOF will be put on the same call */  in modem_cmux_transmit_frame()
314 	buf[0] = fcs;  in modem_cmux_transmit_frame()
729 	uint8_t fcs;  in modem_cmux_process_received_byte()  local
756 		/* Store header for FCS */  in modem_cmux_process_received_byte()
771 		/* Store header for FCS */  in modem_cmux_process_received_byte()
786 		/* Store header for FCS */  in modem_cmux_process_received_byte()
802 			/* Await FCS */  in modem_cmux_process_received_byte()
812 		/* Store header for FCS */  in modem_cmux_process_received_byte()
840 			/* Await FCS */  in modem_cmux_process_received_byte()
854 		/* Compute FCS */  in modem_cmux_process_received_byte()
855 		fcs = crc8_rohc(MODEM_CMUX_FCS_INIT_VALUE, cmux->frame_header,  in modem_cmux_process_received_byte()
858 			fcs = 0xFF - fcs;  in modem_cmux_process_received_byte()
860 			fcs = 0xFF - crc8_rohc(fcs, cmux->frame.data, cmux->frame.data_len);  in modem_cmux_process_received_byte()
863 		/* Validate FCS */  in modem_cmux_process_received_byte()
864 		if (fcs != byte) {  in modem_cmux_process_received_byte()
865 			LOG_WRN("Frame FCS error");  in modem_cmux_process_received_byte()