36 	int n;  in write_room()  local
42 	n = line->head - line->tail;  in write_room()
44 	if (n <= 0)  in write_room()
45 		n += LINE_BUFSIZE; /* The other case */  in write_room()
46 	return n - 1;  in write_room()
131 	int n, count;  in flush_buffer()  local
140 		n = write_chan(line->chan_out, line->head, count,  in flush_buffer()
142 		if (n < 0)  in flush_buffer()
143 			return n;  in flush_buffer()
144 		if (n == count) {  in flush_buffer()
151 			line->head += n;  in flush_buffer()
157 	n = write_chan(line->chan_out, line->head, count,  in flush_buffer()
160 	if (n < 0)  in flush_buffer()
161 		return n;  in flush_buffer()
163 	line->head += n;  in flush_buffer()
195 	int n, ret = 0;  in line_write()  local
201 		n = write_chan(line->chan_out, buf, len,  in line_write()
203 		if (n < 0) {  in line_write()
204 			ret = n;  in line_write()
208 		len -= n;  in line_write()
209 		ret += n;  in line_write()
211 			ret += buffer_data(line, buf + n, len);  in line_write()
373 int setup_one_line(struct line *lines, int n, char *init,  in setup_one_line()  argument
376 	struct line *line = &lines[n];  in setup_one_line()
389 			tty_unregister_device(driver, n);  in setup_one_line()
390 			parse_chan_pair(NULL, line, n, opts, error_out);  in setup_one_line()
400 			tty_unregister_device(driver, n);  in setup_one_line()
405 		err = parse_chan_pair(new, line, n, opts, error_out);  in setup_one_line()
408 					driver, n, NULL);  in setup_one_line()
412 				parse_chan_pair(NULL, line, n, opts, error_out);  in setup_one_line()
445 		unsigned n = simple_strtoul(init, &end, 0);  in line_setup()  local
451 		if (n >= num) {  in line_setup()
455 		conf[n] = end + 1;  in line_setup()
469 	int n;  in line_config()  local
476 	n = simple_strtoul(str, &end, 0);  in line_config()
481 	if (n >= num) {  in line_config()
486 	return setup_one_line(lines, n, end, opts, error_out);  in line_config()
494 	int dev, n = 0;  in line_get_config()  local
510 		CONFIG_CHUNK(str, size, n, "none", 1);  in line_get_config()
514 			CONFIG_CHUNK(str, size, n, line->init_str, 1);  in line_get_config()
516 			n = chan_config_string(line, str, size, error_out);  in line_get_config()
521 	return n;  in line_get_config()
527 	int n;  in line_id()  local
529 	n = simple_strtoul(*str, &end, 0);  in line_id()
534 	*start_out = n;  in line_id()
535 	*end_out = n;  in line_id()
536 	return n;  in line_id()
539 int line_remove(struct line *lines, unsigned int num, int n, char **error_out)  in line_remove()  argument
541 	if (n >= num) {  in line_remove()
545 	return setup_one_line(lines, n, "none", NULL, error_out);  in line_remove()