Lines Matching refs:tail
178 if (info->xmit.head != info->xmit.tail
311 if (info->xmit.head == info->xmit.tail
320 custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100;
322 info->xmit.tail = info->xmit.tail & (SERIAL_XMIT_SIZE-1);
326 info->xmit.tail,
333 if (info->xmit.head == info->xmit.tail) {
533 info->xmit.head = info->xmit.tail = 0;
753 info->xmit.tail,
770 if (info->xmit.head == info->xmit.tail
798 info->xmit.tail,
814 if (info->xmit.head != info->xmit.tail
834 return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
841 return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
850 info->xmit.head = info->xmit.tail = 0;