172 	int err;  in ds_send_control_cmd()  local
174 	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),  in ds_send_control_cmd()
176 	if (err < 0) {  in ds_send_control_cmd()
179 			value, index, err);  in ds_send_control_cmd()
180 		return err;  in ds_send_control_cmd()
183 	return err;  in ds_send_control_cmd()
188 	int err;  in ds_send_control_mode()  local
190 	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),  in ds_send_control_mode()
192 	if (err < 0) {  in ds_send_control_mode()
195 			value, index, err);  in ds_send_control_mode()
196 		return err;  in ds_send_control_mode()
199 	return err;  in ds_send_control_mode()
204 	int err;  in ds_send_control()  local
206 	err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]),  in ds_send_control()
208 	if (err < 0) {  in ds_send_control()
211 			value, index, err);  in ds_send_control()
212 		return err;  in ds_send_control()
215 	return err;  in ds_send_control()
272 	int count, err;  in ds_recv_status()  local
278 	err = usb_interrupt_msg(dev->udev,  in ds_recv_status()
283 	if (err < 0) {  in ds_recv_status()
286 			dev->ep[EP_STATUS], err);  in ds_recv_status()
287 		return err;  in ds_recv_status()
318 	int count, err;  in ds_recv_data()  local
330 	err = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->ep[EP_DATA_IN]),  in ds_recv_data()
332 	if (err < 0) {  in ds_recv_data()
343 		return err;  in ds_recv_data()
361 	int count, err;  in ds_send_data()  local
364 …err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, dev->ep[EP_DATA_OUT]), buf, len, &count, …  in ds_send_data()
365 	if (err < 0) {  in ds_send_data()
367 			"err=%d.\n", dev->ep[EP_DATA_OUT], err);  in ds_send_data()
368 		return err;  in ds_send_data()
371 	return err;  in ds_send_data()
379 	int count = 0, err = 0;
382 		err = ds_send_control(dev, CTL_HALT_EXE_IDLE, 0);
383 		if (err)
385 		err = ds_send_control(dev, CTL_RESUME_EXE, 0);
386 		if (err)
388 		err = ds_recv_status(dev, &st);
389 		if (err)
393 			err = ds_send_control_mode(dev, MOD_PULSE_EN, 0);
394 			if (err)
399 	return err;
404 	int err;
406 	err = ds_send_control_cmd(dev, CTL_RESET_DEVICE, 0);
407 	if (err)
408 		return err;
410 	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, 0);
411 	if (err)
412 		return err;
414 	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM | COMM_TYPE, 0x40);
415 	if (err)
416 		return err;
418 	err = ds_send_control_mode(dev, MOD_PULSE_EN, PULSE_PROG);
419 	if (err)
420 		return err;
422 	err = ds_dump_status(dev, st);
424 	return err;
431 	int err, count = 0;  in ds_wait_status()  local
435 		err = ds_recv_status(dev, st);  in ds_wait_status()
437 		if (err >= 0) {  in ds_wait_status()
439 			printk("0x%x: count=%d, status: ", dev->ep[EP_STATUS], err);  in ds_wait_status()
440 			for (i = 0; i < err; ++i)  in ds_wait_status()
445 	} while (!(st->status & ST_IDLE) && !(err < 0) && ++count < 100);  in ds_wait_status()
447 	if (err >= 16 && st->status & ST_EPOF) {  in ds_wait_status()
458 	if (err > 16 || count >= 100 || err < 0)  in ds_wait_status()
459 		ds_dump_status(dev, dev->st_buf, err);  in ds_wait_status()
465 	if (count >= 100 || err < 0)  in ds_wait_status()
473 	int err;  in ds_reset()  local
484 	err = ds_send_control(dev, COMM_1_WIRE_RESET | COMM_IM, SPEED_NORMAL);  in ds_reset()
485 	if (err)  in ds_reset()
486 		return err;  in ds_reset()
494 	int err;
504 	err = ds_send_control_mode(dev, MOD_1WIRE_SPEED, speed);
505 	if (err)
506 		return err;
508 	return err;
514 	int err = 0;  in ds_set_pullup()  local
527 		return err;  in ds_set_pullup()
529 	err = ds_send_control(dev, COMM_SET_DURATION | COMM_IM, del);  in ds_set_pullup()
530 	if (err)  in ds_set_pullup()
531 		return err;  in ds_set_pullup()
535 	return err;  in ds_set_pullup()
540 	int err;  in ds_touch_bit()  local
543 	err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit ? COMM_D : 0),  in ds_touch_bit()
545 	if (err)  in ds_touch_bit()
546 		return err;  in ds_touch_bit()
550 	err = ds_recv_data(dev, tbit, sizeof(*tbit));  in ds_touch_bit()
551 	if (err < 0)  in ds_touch_bit()
552 		return err;  in ds_touch_bit()
560 	int err;
567 	err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_ICP |
569 	if (err)
570 		return err;
580 	int err;  in ds_write_byte()  local
583 	err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM | dev->spu_bit, byte);  in ds_write_byte()
584 	if (err)  in ds_write_byte()
585 		return err;  in ds_write_byte()
590 	err = ds_wait_status(dev, &st);  in ds_write_byte()
591 	if (err)  in ds_write_byte()
592 		return err;  in ds_write_byte()
594 	err = ds_recv_data(dev, &dev->byte_buf, 1);  in ds_write_byte()
595 	if (err < 0)  in ds_write_byte()
596 		return err;  in ds_write_byte()
603 	int err;  in ds_read_byte()  local
606 	err = ds_send_control(dev, COMM_BYTE_IO | COMM_IM, 0xff);  in ds_read_byte()
607 	if (err)  in ds_read_byte()
608 		return err;  in ds_read_byte()
612 	err = ds_recv_data(dev, byte, sizeof(*byte));  in ds_read_byte()
613 	if (err < 0)  in ds_read_byte()
614 		return err;  in ds_read_byte()
622 	int err;  in read_block_chunk()  local
626 	err = ds_send_data(dev, buf, len);  in read_block_chunk()
627 	if (err < 0)  in read_block_chunk()
628 		return err;  in read_block_chunk()
630 	err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM, len);  in read_block_chunk()
631 	if (err)  in read_block_chunk()
632 		return err;  in read_block_chunk()
637 	err = ds_recv_data(dev, buf, len);  in read_block_chunk()
639 	return err;  in read_block_chunk()
644 	int err, to_read, rem = len;  in ds_read_block()  local
651 		err = read_block_chunk(dev, &buf[len - rem], to_read);  in ds_read_block()
652 		if (err < 0)  in ds_read_block()
653 			return err;  in ds_read_block()
657 	return err;  in ds_read_block()
662 	int err;  in ds_write_block()  local
665 	err = ds_send_data(dev, buf, len);  in ds_write_block()
666 	if (err < 0)  in ds_write_block()
667 		return err;  in ds_write_block()
669 	err = ds_send_control(dev, COMM_BLOCK_IO | COMM_IM | dev->spu_bit, len);  in ds_write_block()
670 	if (err)  in ds_write_block()
671 		return err;  in ds_write_block()
678 	err = ds_recv_data(dev, buf, len);  in ds_write_block()
679 	if (err < 0)  in ds_write_block()
680 		return err;  in ds_write_block()
682 	return !(err == len);  in ds_write_block()
697 	int err;  in ds9490r_search()  local
747 		err = ds_recv_status(dev, &st);  in ds9490r_search()
748 		if (err < 0 || err < sizeof(st))  in ds9490r_search()
760 			err = ds_recv_data(dev, (u8 *)buf, bufsize);  in ds9490r_search()
761 			if (err < 0)  in ds9490r_search()
763 			for (i = 0; i < err/8; ++i) {  in ds9490r_search()
814 	int err;
817 	err = ds_send_data(dev, (unsigned char *)&init, sizeof(init));
818 	if (err)
819 		return err;
823 	err = ds_send_control(dev, COMM_MATCH_ACCESS | COMM_IM | COMM_RST, 0x0055);
824 	if (err)
825 		return err;
834 	int err;
841 	err = ds_send_data(dev, buf, sizeof(buf));
842 	if (err)
843 		return err;
847 	err = ds_send_control(dev, COMM_SET_PATH | COMM_IM | COMM_RST, 0);
848 	if (err)
849 		return err;
879 	int err;
881 	err = ds_touch_bit(dev, 1, &dev->byte_buf);
882 	if (err)
899 	int err;  in ds9490r_read_byte()  local
901 	err = ds_read_byte(dev, &dev->byte_buf);  in ds9490r_read_byte()
902 	if (err)  in ds9490r_read_byte()
928 	int err;  in ds9490r_read_block()  local
938 	err = ds_read_block(dev, tbuf, len);  in ds9490r_read_block()
939 	if (err >= 0)  in ds9490r_read_block()
944 	return err >= 0 ? len : 0;  in ds9490r_read_block()
950 	int err;  in ds9490r_reset()  local
952 	err = ds_reset(dev);  in ds9490r_reset()
953 	if (err)  in ds9490r_reset()
1019 	int i, err, alt;  in ds_probe()  local
1027 		err = -ENOMEM;  in ds_probe()
1034 	err = usb_reset_configuration(dev->udev);  in ds_probe()
1035 	if (err) {  in ds_probe()
1037 			"Failed to reset configuration: err=%d.\n", err);  in ds_probe()
1043 	err = usb_set_interface(dev->udev,  in ds_probe()
1045 	if (err) {  in ds_probe()
1048 			intf->cur_altsetting->desc.bInterfaceNumber, err);  in ds_probe()
1056 		err = -EINVAL;  in ds_probe()
1076 	err = ds_w1_init(dev);  in ds_probe()
1077 	if (err)  in ds_probe()
1091 	return err;  in ds_probe()