61 	if (to->to_end == 0) {						\
88 	to->to_end = 0;  in ttyoutq_flush()
149 		if (to->to_begin == to->to_end)  in ttyoutq_read()
162 		cend = MIN(MIN(to->to_end, to->to_begin + len),  in ttyoutq_read()
171 		if (cend == to->to_end) {  in ttyoutq_read()
174 			to->to_end = 0;  in ttyoutq_read()
179 			to->to_end -= TTYOUTQ_DATASIZE;  in ttyoutq_read()
210 		if (to->to_begin == to->to_end)  in ttyoutq_read_uio()
223 		cend = MIN(MIN(to->to_end, to->to_begin + uio->uio_resid),  in ttyoutq_read_uio()
234 		if (cend == TTYOUTQ_DATASIZE || cend == to->to_end) {  in ttyoutq_read_uio()
241 			if (to->to_end <= TTYOUTQ_DATASIZE)  in ttyoutq_read_uio()
242 				to->to_end = 0;  in ttyoutq_read_uio()
244 				to->to_end -= TTYOUTQ_DATASIZE;  in ttyoutq_read_uio()
285 		boff = to->to_end % TTYOUTQ_DATASIZE;  in ttyoutq_write()
287 		if (to->to_end == 0) {  in ttyoutq_write()
315 		to->to_end += l;  in ttyoutq_write()