90  * SPI Bus status register: F81534_BUS_REG_STATUS
219 	int status;  in f81534_set_register()  local
233 		status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),  in f81534_set_register()
238 		if (status == sizeof(u8)) {  in f81534_set_register()
239 			status = 0;  in f81534_set_register()
244 	if (status < 0) {  in f81534_set_register()
246 				__func__, reg, data, status);  in f81534_set_register()
250 	return status;  in f81534_set_register()
258 	int status;  in f81534_get_register()  local
270 		status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),  in f81534_get_register()
275 		if (status > 0) {  in f81534_get_register()
276 			status = 0;  in f81534_get_register()
278 		} else if (status == 0) {  in f81534_get_register()
279 			status = -EIO;  in f81534_get_register()
283 	if (status < 0) {  in f81534_get_register()
285 				reg, status);  in f81534_get_register()
293 	return status;  in f81534_get_register()
299 	int status;  in f81534_set_mask_register()  local
302 	status = f81534_get_register(serial, reg, &tmp);  in f81534_set_mask_register()
303 	if (status)  in f81534_set_mask_register()
304 		return status;  in f81534_set_mask_register()
346  * status for every command. e.g., F81534_BUS_REG_START/F81534_BUS_REG_END
352 	int status;  in f81534_wait_for_spi_idle()  local
355 		status = f81534_get_register(serial, F81534_BUS_REG_STATUS,  in f81534_wait_for_spi_idle()
357 		if (status)  in f81534_wait_for_spi_idle()
358 			return status;  in f81534_wait_for_spi_idle()
382 	int status;  in f81534_get_spi_register()  local
384 	status = f81534_get_register(serial, reg, data);  in f81534_get_spi_register()
385 	if (status)  in f81534_get_spi_register()
386 		return status;  in f81534_get_spi_register()
393 	int status;  in f81534_set_spi_register()  local
395 	status = f81534_set_register(serial, reg, data);  in f81534_set_spi_register()
396 	if (status)  in f81534_set_spi_register()
397 		return status;  in f81534_set_spi_register()
409 	int status;  in f81534_read_flash()  local
413 	status = f81534_set_spi_register(serial, F81534_BUS_REG_START,  in f81534_read_flash()
415 	if (status)  in f81534_read_flash()
416 		return status;  in f81534_read_flash()
418 	status = f81534_set_spi_register(serial, F81534_BUS_REG_START,  in f81534_read_flash()
420 	if (status)  in f81534_read_flash()
421 		return status;  in f81534_read_flash()
423 	status = f81534_set_spi_register(serial, F81534_BUS_REG_START,  in f81534_read_flash()
425 	if (status)  in f81534_read_flash()
426 		return status;  in f81534_read_flash()
428 	status = f81534_set_spi_register(serial, F81534_BUS_REG_START,  in f81534_read_flash()
430 	if (status)  in f81534_read_flash()
431 		return status;  in f81534_read_flash()
449 			status = f81534_set_spi_register(serial, reg_tmp,  in f81534_read_flash()
451 			if (status)  in f81534_read_flash()
452 				return status;  in f81534_read_flash()
454 			status = f81534_get_spi_register(serial,  in f81534_read_flash()
457 			if (status)  in f81534_read_flash()
458 				return status;  in f81534_read_flash()
561 	int status;  in f81534_set_port_config()  local
588 	status = f81534_set_port_register(port, F81534_CLOCK_REG,  in f81534_set_port_config()
590 	if (status) {  in f81534_set_port_config()
592 		return status;  in f81534_set_port_config()
600 	status = f81534_set_port_register(port, F81534_CONFIG1_REG, value);  in f81534_set_port_config()
601 	if (status) {  in f81534_set_port_config()
603 		return status;  in f81534_set_port_config()
611 	status = f81534_set_port_register(port, F81534_FIFO_CONTROL_REG,  in f81534_set_port_config()
613 	if (status) {  in f81534_set_port_config()
615 		return status;  in f81534_set_port_config()
623 	status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG,  in f81534_set_port_config()
625 	if (status) {  in f81534_set_port_config()
631 	status = f81534_set_port_register(port, F81534_DIVISOR_LSB_REG, value);  in f81534_set_port_config()
632 	if (status) {  in f81534_set_port_config()
638 	status = f81534_set_port_register(port, F81534_DIVISOR_MSB_REG, value);  in f81534_set_port_config()
639 	if (status) {  in f81534_set_port_config()
645 	status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG,  in f81534_set_port_config()
647 	if (status) {  in f81534_set_port_config()
656 	return status;  in f81534_set_port_config()
663 	int status;  in f81534_break_ctl()  local
672 	status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG,  in f81534_break_ctl()
674 	if (status)  in f81534_break_ctl()
675 		dev_err(&port->dev, "set break failed: %d\n", status);  in f81534_break_ctl()
679 	return status;  in f81534_break_ctl()
686 	int status;  in f81534_update_mctrl()  local
712 	status = f81534_set_port_register(port, F81534_MODEM_CONTROL_REG, tmp);  in f81534_update_mctrl()
713 	if (status < 0) {  in f81534_update_mctrl()
716 		return status;  in f81534_update_mctrl()
736 	int status;  in f81534_find_config_idx()  local
738 	status = f81534_read_flash(serial, F81534_CUSTOM_ADDRESS_START, 1,  in f81534_find_config_idx()
740 	if (status) {  in f81534_find_config_idx()
742 				__func__, status);  in f81534_find_config_idx()
743 		return status;  in f81534_find_config_idx()
759  * To detect RX pin status, we'll enable MCR interal loopback, disable it and
764 	int status;  in f81534_check_port_hw_disabled()  local
772 	status = f81534_get_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
774 	if (status)  in f81534_check_port_hw_disabled()
780 	status = f81534_set_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
783 	if (status)  in f81534_check_port_hw_disabled()
786 	status = f81534_get_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
788 	if (status)  in f81534_check_port_hw_disabled()
791 	status = f81534_set_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
793 	if (status)  in f81534_check_port_hw_disabled()
796 	status = f81534_set_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
798 	if (status)  in f81534_check_port_hw_disabled()
803 	status = f81534_get_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
805 	if (status)  in f81534_check_port_hw_disabled()
808 	status = f81534_set_phy_port_register(serial, phy,  in f81534_check_port_hw_disabled()
810 	if (status)  in f81534_check_port_hw_disabled()
846 	int status;  in f81534_calc_num_ports()  local
864 	status = f81534_find_config_idx(serial, &serial_priv->setting_idx);  in f81534_calc_num_ports()
865 	if (status) {  in f81534_calc_num_ports()
867 				__func__, status);  in f81534_calc_num_ports()
868 		return status;  in f81534_calc_num_ports()
876 		status = f81534_read_flash(serial,  in f81534_calc_num_ports()
881 		if (status) {  in f81534_calc_num_ports()
884 					__func__, status);  in f81534_calc_num_ports()
885 			return status;  in f81534_calc_num_ports()
893 		status = f81534_read_flash(serial,  in f81534_calc_num_ports()
897 		if (status) {  in f81534_calc_num_ports()
900 					status);  in f81534_calc_num_ports()
901 			return status;  in f81534_calc_num_ports()
955 	int status;  in f81534_set_termios()  local
990 	status = f81534_set_port_config(port, tty, baud, old_baud, new_lcr);  in f81534_set_termios()
991 	if (status < 0) {  in f81534_set_termios()
993 				__func__, status);  in f81534_set_termios()
1050 	int status;  in f81534_read_msr()  local
1054 	status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr);  in f81534_read_msr()
1055 	if (status)  in f81534_read_msr()
1056 		return status;  in f81534_read_msr()
1071 	int status;  in f81534_open()  local
1073 	status = f81534_set_port_register(port,  in f81534_open()
1076 	if (status) {  in f81534_open()
1078 				status);  in f81534_open()
1079 		return status;  in f81534_open()
1085 	status = f81534_read_msr(port);  in f81534_open()
1086 	if (status)  in f81534_open()
1087 		return status;  in f81534_open()
1093 		status = f81534_submit_read_urb(port->serial, GFP_KERNEL);  in f81534_open()
1094 		if (status)  in f81534_open()
1104 	return status;  in f81534_open()
1151 	int status;  in f81534_process_per_serial_block()  local
1171 		status = f81534_submit_writer(port, GFP_ATOMIC);  in f81534_process_per_serial_block()
1172 		if (status)  in f81534_process_per_serial_block()
1276 	switch (urb->status) {  in f81534_write_usb_callback()
1283 				__func__, urb->status);  in f81534_write_usb_callback()
1287 				__func__, urb->status);  in f81534_write_usb_callback()
1290 		dev_dbg(&port->dev, "%s - nonzero urb status: %d\n",  in f81534_write_usb_callback()
1291 				__func__, urb->status);  in f81534_write_usb_callback()
1300 	int status;  in f81534_lsr_worker()  local
1306 	status = f81534_get_port_register(port, F81534_LINE_STATUS_REG, &tmp);  in f81534_lsr_worker()
1307 	if (status)  in f81534_lsr_worker()
1308 		dev_warn(&port->dev, "read LSR failed: %d\n", status);  in f81534_lsr_worker()
1317 	int status;  in f81534_set_port_output_pin()  local
1342 		status = f81534_set_mask_register(serial,  in f81534_set_port_output_pin()
1345 		if (status)  in f81534_set_port_output_pin()
1346 			return status;  in f81534_set_port_output_pin()
1429 	int status;  in f81534_tiocmget()  local
1435 	status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr);  in f81534_tiocmget()
1436 	if (status)  in f81534_tiocmget()
1437 		return status;  in f81534_tiocmget()
1472 	int bytes_out, status;  in f81534_write()  local
1480 	status = f81534_submit_writer(port, GFP_ATOMIC);  in f81534_write()
1481 	if (status) {  in f81534_write()
1483 		return status;  in f81534_write()
1502 	int status;  in f81534_resume()  local
1512 		status = f81534_submit_read_urb(serial, GFP_NOIO);  in f81534_resume()
1513 		if (status) {  in f81534_resume()
1515 			return status;  in f81534_resume()
1526 		status = f81534_submit_writer(port, GFP_NOIO);  in f81534_resume()
1527 		if (status) {  in f81534_resume()