298 #define UNIT(x)		((x) & 0x03)		/* drive on fdc */  macro
734 	if (!(fdc_state[fdc].dor & (0x10 << UNIT(drive))) ||  in disk_change()
735 	    (fdc_state[fdc].dor & 3) != UNIT(drive) || fdc != FDC(drive)) {  in disk_change()
824 	fdc_outb(fdc_state[fdc].dor & ~(0x10 << UNIT(drive)),  in twaddle()
919 	unsigned char mask = ~(0x10 << UNIT(nr));  in motor_off_callback()
933 	if (!(fdc_state[fdc].dor & (0x10 << UNIT(drive))))  in floppy_off()
970 		if (!(set_dor(current_fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) &  in scandrives()
971 		      (0x10 << UNIT(drive))))  in scandrives()
974 			set_dor(current_fdc, ~(0x10 << UNIT(drive)), 0);  in scandrives()
1307 				output_byte(fdc, UNIT(drive));  in fdc_specify()
1571 		output_byte(fdc, UNIT(drive));  in check_wp()
1625 				set_dor(current_fdc, ~(0x10 << UNIT(current_drive)), 0);  in seek_floppy()
1644 	output_byte(current_fdc, UNIT(current_drive));  in seek_floppy()
1757 		} while ((reply_buffer[ST0] & 0x83) != UNIT(current_drive) &&  in floppy_interrupt()
1776 	if (output_byte(current_fdc, UNIT(current_drive)) < 0)  in recalibrate_floppy()
1903 	data = UNIT(current_drive);  in start_motor()
1905 		if (!(fdc_state[current_fdc].dor & (0x10 << UNIT(current_drive)))) {  in start_motor()
1911 			data |= (0x10 << UNIT(current_drive));  in start_motor()
1913 	} else if (fdc_state[current_fdc].dor & (0x10 << UNIT(current_drive)))  in start_motor()
1914 		mask &= ~(0x10 << UNIT(current_drive));  in start_motor()
2156 	raw_cmd->cmd[DR_SELECT] = UNIT(current_drive) + PH_HEAD(_floppy, format_req.head);  in setup_format_params()
2604 	raw_cmd->cmd[DR_SELECT] = UNIT(current_drive) + PH_HEAD(_floppy, raw_cmd->cmd[HEAD]);  in make_raw_rw_request()
3454 		ret = fd_eject(UNIT(drive));  in fd_locked_ioctl()