Lines Matching refs:ldata
132 static inline size_t read_cnt(struct n_tty_data *ldata) in read_cnt() argument
134 return ldata->read_head - ldata->read_tail; in read_cnt()
137 static inline unsigned char read_buf(struct n_tty_data *ldata, size_t i) in read_buf() argument
139 return ldata->read_buf[i & (N_TTY_BUF_SIZE - 1)]; in read_buf()
142 static inline unsigned char *read_buf_addr(struct n_tty_data *ldata, size_t i) in read_buf_addr() argument
144 return &ldata->read_buf[i & (N_TTY_BUF_SIZE - 1)]; in read_buf_addr()
147 static inline unsigned char echo_buf(struct n_tty_data *ldata, size_t i) in echo_buf() argument
150 return ldata->echo_buf[i & (N_TTY_BUF_SIZE - 1)]; in echo_buf()
153 static inline unsigned char *echo_buf_addr(struct n_tty_data *ldata, size_t i) in echo_buf_addr() argument
155 return &ldata->echo_buf[i & (N_TTY_BUF_SIZE - 1)]; in echo_buf_addr()
170 struct n_tty_data *ldata = tty->disc_data; in tty_copy() local
172 void *from = read_buf_addr(ldata, tail); in tty_copy()
180 from = ldata->read_buf; in tty_copy()
202 struct n_tty_data *ldata = tty->disc_data; in n_tty_kick_worker() local
205 if (unlikely(ldata->no_room)) { in n_tty_kick_worker()
206 ldata->no_room = 0; in n_tty_kick_worker()
222 struct n_tty_data *ldata = tty->disc_data; in chars_in_buffer() local
225 if (!ldata->icanon) in chars_in_buffer()
226 n = ldata->commit_head - ldata->read_tail; in chars_in_buffer()
228 n = ldata->canon_head - ldata->read_tail; in chars_in_buffer()
249 struct n_tty_data *ldata = tty->disc_data; in n_tty_check_throttle() local
256 if (ldata->icanon && ldata->canon_head == ldata->read_tail) in n_tty_check_throttle()
262 if (N_TTY_BUF_SIZE - read_cnt(ldata) >= TTY_THRESHOLD_THROTTLE) in n_tty_check_throttle()
313 static inline void put_tty_queue(unsigned char c, struct n_tty_data *ldata) in put_tty_queue() argument
315 *read_buf_addr(ldata, ldata->read_head) = c; in put_tty_queue()
316 ldata->read_head++; in put_tty_queue()
330 static void reset_buffer_flags(struct n_tty_data *ldata) in reset_buffer_flags() argument
332 ldata->read_head = ldata->canon_head = ldata->read_tail = 0; in reset_buffer_flags()
333 ldata->commit_head = 0; in reset_buffer_flags()
334 ldata->line_start = 0; in reset_buffer_flags()
336 ldata->erasing = 0; in reset_buffer_flags()
337 bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); in reset_buffer_flags()
338 ldata->push = 0; in reset_buffer_flags()
430 struct n_tty_data *ldata = tty->disc_data; in do_output_char() local
439 ldata->column = 0; in do_output_char()
443 ldata->canon_column = ldata->column = 0; in do_output_char()
447 ldata->canon_column = ldata->column; in do_output_char()
450 if (O_ONOCR(tty) && ldata->column == 0) in do_output_char()
455 ldata->canon_column = ldata->column = 0; in do_output_char()
458 ldata->canon_column = ldata->column = 0; in do_output_char()
461 spaces = 8 - (ldata->column & 7); in do_output_char()
465 ldata->column += spaces; in do_output_char()
469 ldata->column += spaces; in do_output_char()
472 if (ldata->column > 0) in do_output_char()
473 ldata->column--; in do_output_char()
480 ldata->column++; in do_output_char()
505 struct n_tty_data *ldata = tty->disc_data; in process_output() local
508 mutex_lock(&ldata->output_lock); in process_output()
513 mutex_unlock(&ldata->output_lock); in process_output()
542 struct n_tty_data *ldata = tty->disc_data; in process_output_block() local
547 mutex_lock(&ldata->output_lock); in process_output_block()
551 mutex_unlock(&ldata->output_lock); in process_output_block()
563 ldata->column = 0; in process_output_block()
566 ldata->canon_column = ldata->column; in process_output_block()
569 if (O_ONOCR(tty) && ldata->column == 0) in process_output_block()
573 ldata->canon_column = ldata->column = 0; in process_output_block()
578 if (ldata->column > 0) in process_output_block()
579 ldata->column--; in process_output_block()
586 ldata->column++; in process_output_block()
594 mutex_unlock(&ldata->output_lock); in process_output_block()
625 struct n_tty_data *ldata = tty->disc_data; in __process_echoes() local
632 tail = ldata->echo_tail; in __process_echoes()
633 while (MASK(ldata->echo_commit) != MASK(tail)) { in __process_echoes()
634 c = echo_buf(ldata, tail); in __process_echoes()
644 if (MASK(ldata->echo_commit) == MASK(tail + 1)) in __process_echoes()
651 op = echo_buf(ldata, tail + 1); in __process_echoes()
657 if (MASK(ldata->echo_commit) == MASK(tail + 2)) in __process_echoes()
659 num_chars = echo_buf(ldata, tail + 2); in __process_echoes()
672 num_chars += ldata->canon_column; in __process_echoes()
682 if (ldata->column > 0) in __process_echoes()
683 ldata->column--; in __process_echoes()
689 ldata->canon_column = ldata->column; in __process_echoes()
694 if (ldata->column > 0) in __process_echoes()
695 ldata->column--; in __process_echoes()
706 ldata->column++; in __process_echoes()
727 ldata->column += 2; in __process_echoes()
753 while (ldata->echo_commit > tail && in __process_echoes()
754 ldata->echo_commit - tail >= ECHO_DISCARD_WATERMARK) { in __process_echoes()
755 if (echo_buf(ldata, tail) == ECHO_OP_START) { in __process_echoes()
756 if (echo_buf(ldata, tail + 1) == ECHO_OP_ERASE_TAB) in __process_echoes()
765 ldata->echo_tail = tail; in __process_echoes()
771 struct n_tty_data *ldata = tty->disc_data; in commit_echoes() local
775 mutex_lock(&ldata->output_lock); in commit_echoes()
776 head = ldata->echo_head; in commit_echoes()
777 ldata->echo_mark = head; in commit_echoes()
778 old = ldata->echo_commit - ldata->echo_tail; in commit_echoes()
783 nr = head - ldata->echo_tail; in commit_echoes()
786 mutex_unlock(&ldata->output_lock); in commit_echoes()
790 ldata->echo_commit = head; in commit_echoes()
792 mutex_unlock(&ldata->output_lock); in commit_echoes()
800 struct n_tty_data *ldata = tty->disc_data; in process_echoes() local
803 if (ldata->echo_mark == ldata->echo_tail) in process_echoes()
806 mutex_lock(&ldata->output_lock); in process_echoes()
807 ldata->echo_commit = ldata->echo_mark; in process_echoes()
809 mutex_unlock(&ldata->output_lock); in process_echoes()
818 struct n_tty_data *ldata = tty->disc_data; in flush_echoes() local
821 ldata->echo_commit == ldata->echo_head) in flush_echoes()
824 mutex_lock(&ldata->output_lock); in flush_echoes()
825 ldata->echo_commit = ldata->echo_head; in flush_echoes()
827 mutex_unlock(&ldata->output_lock); in flush_echoes()
838 static inline void add_echo_byte(unsigned char c, struct n_tty_data *ldata) in add_echo_byte() argument
840 *echo_buf_addr(ldata, ldata->echo_head) = c; in add_echo_byte()
842 ldata->echo_head++; in add_echo_byte()
852 static void echo_move_back_col(struct n_tty_data *ldata) in echo_move_back_col() argument
854 add_echo_byte(ECHO_OP_START, ldata); in echo_move_back_col()
855 add_echo_byte(ECHO_OP_MOVE_BACK_COL, ldata); in echo_move_back_col()
866 static void echo_set_canon_col(struct n_tty_data *ldata) in echo_set_canon_col() argument
868 add_echo_byte(ECHO_OP_START, ldata); in echo_set_canon_col()
869 add_echo_byte(ECHO_OP_SET_CANON_COL, ldata); in echo_set_canon_col()
888 struct n_tty_data *ldata) in echo_erase_tab() argument
890 add_echo_byte(ECHO_OP_START, ldata); in echo_erase_tab()
891 add_echo_byte(ECHO_OP_ERASE_TAB, ldata); in echo_erase_tab()
900 add_echo_byte(num_chars, ldata); in echo_erase_tab()
914 static void echo_char_raw(unsigned char c, struct n_tty_data *ldata) in echo_char_raw() argument
917 add_echo_byte(ECHO_OP_START, ldata); in echo_char_raw()
918 add_echo_byte(ECHO_OP_START, ldata); in echo_char_raw()
920 add_echo_byte(c, ldata); in echo_char_raw()
938 struct n_tty_data *ldata = tty->disc_data; in echo_char() local
941 add_echo_byte(ECHO_OP_START, ldata); in echo_char()
942 add_echo_byte(ECHO_OP_START, ldata); in echo_char()
945 add_echo_byte(ECHO_OP_START, ldata); in echo_char()
946 add_echo_byte(c, ldata); in echo_char()
955 static inline void finish_erasing(struct n_tty_data *ldata) in finish_erasing() argument
957 if (ldata->erasing) { in finish_erasing()
958 echo_char_raw('/', ldata); in finish_erasing()
959 ldata->erasing = 0; in finish_erasing()
978 struct n_tty_data *ldata = tty->disc_data; in eraser() local
984 if (ldata->read_head == ldata->canon_head) { in eraser()
994 ldata->read_head = ldata->canon_head; in eraser()
998 ldata->read_head = ldata->canon_head; in eraser()
999 finish_erasing(ldata); in eraser()
1003 echo_char_raw('\n', ldata); in eraser()
1010 while (MASK(ldata->read_head) != MASK(ldata->canon_head)) { in eraser()
1011 head = ldata->read_head; in eraser()
1016 c = read_buf(ldata, head); in eraser()
1018 MASK(head) != MASK(ldata->canon_head)); in eraser()
1031 cnt = ldata->read_head - head; in eraser()
1032 ldata->read_head = head; in eraser()
1035 if (!ldata->erasing) { in eraser()
1036 echo_char_raw('\\', ldata); in eraser()
1037 ldata->erasing = 1; in eraser()
1043 echo_char_raw(read_buf(ldata, head), ldata); in eraser()
1044 echo_move_back_col(ldata); in eraser()
1051 size_t tail = ldata->read_head; in eraser()
1060 while (MASK(tail) != MASK(ldata->canon_head)) { in eraser()
1062 c = read_buf(ldata, tail); in eraser()
1073 echo_erase_tab(num_chars, after_tab, ldata); in eraser()
1076 echo_char_raw('\b', ldata); in eraser()
1077 echo_char_raw(' ', ldata); in eraser()
1078 echo_char_raw('\b', ldata); in eraser()
1081 echo_char_raw('\b', ldata); in eraser()
1082 echo_char_raw(' ', ldata); in eraser()
1083 echo_char_raw('\b', ldata); in eraser()
1090 if (ldata->read_head == ldata->canon_head && L_ECHO(tty)) in eraser()
1091 finish_erasing(ldata); in eraser()
1120 struct n_tty_data *ldata = tty->disc_data; in isig() local
1133 mutex_lock(&ldata->output_lock); in isig()
1134 ldata->echo_head = ldata->echo_tail = 0; in isig()
1135 ldata->echo_mark = ldata->echo_commit = 0; in isig()
1136 mutex_unlock(&ldata->output_lock); in isig()
1168 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_break() local
1177 put_tty_queue('\377', ldata); in n_tty_receive_break()
1178 put_tty_queue('\0', ldata); in n_tty_receive_break()
1180 put_tty_queue('\0', ldata); in n_tty_receive_break()
1198 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_overrun() local
1200 ldata->num_overrun++; in n_tty_receive_overrun()
1201 if (time_after(jiffies, ldata->overrun_time + HZ) || in n_tty_receive_overrun()
1202 time_after(ldata->overrun_time, jiffies)) { in n_tty_receive_overrun()
1203 tty_warn(tty, "%d input overrun(s)\n", ldata->num_overrun); in n_tty_receive_overrun()
1204 ldata->overrun_time = jiffies; in n_tty_receive_overrun()
1205 ldata->num_overrun = 0; in n_tty_receive_overrun()
1222 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_parity_error() local
1228 put_tty_queue('\377', ldata); in n_tty_receive_parity_error()
1229 put_tty_queue('\0', ldata); in n_tty_receive_parity_error()
1230 put_tty_queue(c, ldata); in n_tty_receive_parity_error()
1232 put_tty_queue('\0', ldata); in n_tty_receive_parity_error()
1234 put_tty_queue(c, ldata); in n_tty_receive_parity_error()
1265 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_char_special() local
1305 if (ldata->icanon) { in n_tty_receive_char_special()
1313 ldata->lnext = 1; in n_tty_receive_char_special()
1315 finish_erasing(ldata); in n_tty_receive_char_special()
1317 echo_char_raw('^', ldata); in n_tty_receive_char_special()
1318 echo_char_raw('\b', ldata); in n_tty_receive_char_special()
1325 size_t tail = ldata->canon_head; in n_tty_receive_char_special()
1327 finish_erasing(ldata); in n_tty_receive_char_special()
1329 echo_char_raw('\n', ldata); in n_tty_receive_char_special()
1330 while (MASK(tail) != MASK(ldata->read_head)) { in n_tty_receive_char_special()
1331 echo_char(read_buf(ldata, tail), tty); in n_tty_receive_char_special()
1339 echo_char_raw('\n', ldata); in n_tty_receive_char_special()
1355 if (ldata->canon_head == ldata->read_head) in n_tty_receive_char_special()
1356 echo_set_canon_col(ldata); in n_tty_receive_char_special()
1365 put_tty_queue(c, ldata); in n_tty_receive_char_special()
1368 set_bit(ldata->read_head & (N_TTY_BUF_SIZE - 1), ldata->read_flags); in n_tty_receive_char_special()
1369 put_tty_queue(c, ldata); in n_tty_receive_char_special()
1370 smp_store_release(&ldata->canon_head, ldata->read_head); in n_tty_receive_char_special()
1378 finish_erasing(ldata); in n_tty_receive_char_special()
1380 echo_char_raw('\n', ldata); in n_tty_receive_char_special()
1383 if (ldata->canon_head == ldata->read_head) in n_tty_receive_char_special()
1384 echo_set_canon_col(ldata); in n_tty_receive_char_special()
1392 put_tty_queue(c, ldata); in n_tty_receive_char_special()
1394 put_tty_queue(c, ldata); in n_tty_receive_char_special()
1399 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_char() local
1406 finish_erasing(ldata); in n_tty_receive_char()
1408 if (ldata->canon_head == ldata->read_head) in n_tty_receive_char()
1409 echo_set_canon_col(ldata); in n_tty_receive_char()
1415 put_tty_queue(c, ldata); in n_tty_receive_char()
1416 put_tty_queue(c, ldata); in n_tty_receive_char()
1462 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_char_lnext() local
1464 ldata->lnext = 0; in n_tty_receive_char_lnext()
1479 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_buf_real_raw() local
1482 head = ldata->read_head & (N_TTY_BUF_SIZE - 1); in n_tty_receive_buf_real_raw()
1484 memcpy(read_buf_addr(ldata, head), cp, n); in n_tty_receive_buf_real_raw()
1485 ldata->read_head += n; in n_tty_receive_buf_real_raw()
1489 head = ldata->read_head & (N_TTY_BUF_SIZE - 1); in n_tty_receive_buf_real_raw()
1491 memcpy(read_buf_addr(ldata, head), cp, n); in n_tty_receive_buf_real_raw()
1492 ldata->read_head += n; in n_tty_receive_buf_real_raw()
1499 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_buf_raw() local
1506 put_tty_queue(*cp++, ldata); in n_tty_receive_buf_raw()
1529 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_buf_standard() local
1538 if (ldata->lnext) { in n_tty_receive_buf_standard()
1553 put_tty_queue(c, ldata); in n_tty_receive_buf_standard()
1557 if (test_bit(c, ldata->char_map)) in n_tty_receive_buf_standard()
1567 struct n_tty_data *ldata = tty->disc_data; in __receive_buf() local
1570 if (ldata->real_raw) in __receive_buf()
1572 else if (ldata->raw || (L_EXTPROC(tty) && !preops)) in __receive_buf()
1584 if (ldata->icanon && !L_EXTPROC(tty)) in __receive_buf()
1588 smp_store_release(&ldata->commit_head, ldata->read_head); in __receive_buf()
1590 if (read_cnt(ldata)) { in __receive_buf()
1634 struct n_tty_data *ldata = tty->disc_data; in n_tty_receive_buf_common() local
1653 size_t tail = smp_load_acquire(&ldata->read_tail); in n_tty_receive_buf_common()
1655 room = N_TTY_BUF_SIZE - (ldata->read_head - tail); in n_tty_receive_buf_common()
1660 overflow = ldata->icanon && ldata->canon_head == tail; in n_tty_receive_buf_common()
1662 ldata->read_head--; in n_tty_receive_buf_common()
1664 ldata->no_room = flow && !room; in n_tty_receive_buf_common()
1728 struct n_tty_data *ldata = tty->disc_data; in n_tty_set_termios() local
1731 bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); in n_tty_set_termios()
1732 ldata->line_start = ldata->read_tail; in n_tty_set_termios()
1733 if (!L_ICANON(tty) || !read_cnt(ldata)) { in n_tty_set_termios()
1734 ldata->canon_head = ldata->read_tail; in n_tty_set_termios()
1735 ldata->push = 0; in n_tty_set_termios()
1737 set_bit((ldata->read_head - 1) & (N_TTY_BUF_SIZE - 1), in n_tty_set_termios()
1738 ldata->read_flags); in n_tty_set_termios()
1739 ldata->canon_head = ldata->read_head; in n_tty_set_termios()
1740 ldata->push = 1; in n_tty_set_termios()
1742 ldata->commit_head = ldata->read_head; in n_tty_set_termios()
1743 ldata->erasing = 0; in n_tty_set_termios()
1744 ldata->lnext = 0; in n_tty_set_termios()
1747 ldata->icanon = (L_ICANON(tty) != 0); in n_tty_set_termios()
1753 bitmap_zero(ldata->char_map, 256); in n_tty_set_termios()
1756 set_bit('\r', ldata->char_map); in n_tty_set_termios()
1758 set_bit('\n', ldata->char_map); in n_tty_set_termios()
1761 set_bit(ERASE_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1762 set_bit(KILL_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1763 set_bit(EOF_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1764 set_bit('\n', ldata->char_map); in n_tty_set_termios()
1765 set_bit(EOL_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1767 set_bit(WERASE_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1768 set_bit(LNEXT_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1769 set_bit(EOL2_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1772 ldata->char_map); in n_tty_set_termios()
1776 set_bit(START_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1777 set_bit(STOP_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1780 set_bit(INTR_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1781 set_bit(QUIT_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1782 set_bit(SUSP_CHAR(tty), ldata->char_map); in n_tty_set_termios()
1784 clear_bit(__DISABLED_CHAR, ldata->char_map); in n_tty_set_termios()
1785 ldata->raw = 0; in n_tty_set_termios()
1786 ldata->real_raw = 0; in n_tty_set_termios()
1788 ldata->raw = 1; in n_tty_set_termios()
1792 ldata->real_raw = 1; in n_tty_set_termios()
1794 ldata->real_raw = 0; in n_tty_set_termios()
1822 struct n_tty_data *ldata = tty->disc_data; in n_tty_close() local
1828 vfree(ldata); in n_tty_close()
1845 struct n_tty_data *ldata; in n_tty_open() local
1848 ldata = vzalloc(sizeof(*ldata)); in n_tty_open()
1849 if (!ldata) in n_tty_open()
1852 ldata->overrun_time = jiffies; in n_tty_open()
1853 mutex_init(&ldata->atomic_read_lock); in n_tty_open()
1854 mutex_init(&ldata->output_lock); in n_tty_open()
1856 tty->disc_data = ldata; in n_tty_open()
1867 struct n_tty_data *ldata = tty->disc_data; in input_available_p() local
1870 if (ldata->icanon && !L_EXTPROC(tty)) in input_available_p()
1871 return ldata->canon_head != ldata->read_tail; in input_available_p()
1873 return ldata->commit_head - ldata->read_tail >= amt; in input_available_p()
1900 struct n_tty_data *ldata = tty->disc_data; in copy_from_read_buf() local
1903 size_t head = smp_load_acquire(&ldata->commit_head); in copy_from_read_buf()
1904 size_t tail = ldata->read_tail & (N_TTY_BUF_SIZE - 1); in copy_from_read_buf()
1906 n = min(head - ldata->read_tail, N_TTY_BUF_SIZE - tail); in copy_from_read_buf()
1909 unsigned char *from = read_buf_addr(ldata, tail); in copy_from_read_buf()
1914 smp_store_release(&ldata->read_tail, ldata->read_tail + n); in copy_from_read_buf()
1916 if (L_EXTPROC(tty) && ldata->icanon && is_eof && in copy_from_read_buf()
1917 (head == ldata->read_tail)) in copy_from_read_buf()
1923 return head != ldata->read_tail; in copy_from_read_buf()
1955 struct n_tty_data *ldata = tty->disc_data; in canon_copy_from_read_buf() local
1965 canon_head = smp_load_acquire(&ldata->canon_head); in canon_copy_from_read_buf()
1966 n = min(*nr + 1, canon_head - ldata->read_tail); in canon_copy_from_read_buf()
1968 tail = ldata->read_tail & (N_TTY_BUF_SIZE - 1); in canon_copy_from_read_buf()
1974 eol = find_next_bit(ldata->read_flags, size, tail); in canon_copy_from_read_buf()
1978 eol = find_next_bit(ldata->read_flags, more, 0); in canon_copy_from_read_buf()
1988 if (!found || read_buf(ldata, eol) != __DISABLED_CHAR) { in canon_copy_from_read_buf()
2001 clear_bit(eol, ldata->read_flags); in canon_copy_from_read_buf()
2002 smp_store_release(&ldata->read_tail, ldata->read_tail + c); in canon_copy_from_read_buf()
2005 if (!ldata->push) in canon_copy_from_read_buf()
2006 ldata->line_start = ldata->read_tail; in canon_copy_from_read_buf()
2008 ldata->push = 0; in canon_copy_from_read_buf()
2014 return ldata->read_tail != canon_head; in canon_copy_from_read_buf()
2068 struct n_tty_data *ldata = tty->disc_data; in n_tty_read() local
2085 if (ldata->icanon && !L_EXTPROC(tty)) { in n_tty_read()
2097 mutex_unlock(&ldata->atomic_read_lock); in n_tty_read()
2110 if (!mutex_trylock(&ldata->atomic_read_lock)) in n_tty_read()
2113 if (mutex_lock_interruptible(&ldata->atomic_read_lock)) in n_tty_read()
2121 if (!ldata->icanon) { in n_tty_read()
2132 tail = ldata->read_tail; in n_tty_read()
2187 if (ldata->icanon && !L_EXTPROC(tty)) { in n_tty_read()
2221 if (tail != ldata->read_tail) in n_tty_read()
2226 mutex_unlock(&ldata->atomic_read_lock); in n_tty_read()
2307 struct n_tty_data *ldata = tty->disc_data; in n_tty_write() local
2310 mutex_lock(&ldata->output_lock); in n_tty_write()
2312 mutex_unlock(&ldata->output_lock); in n_tty_write()
2384 static unsigned long inq_canon(struct n_tty_data *ldata) in inq_canon() argument
2388 if (ldata->canon_head == ldata->read_tail) in inq_canon()
2390 head = ldata->canon_head; in inq_canon()
2391 tail = ldata->read_tail; in inq_canon()
2395 if (test_bit(tail & (N_TTY_BUF_SIZE - 1), ldata->read_flags) && in inq_canon()
2396 read_buf(ldata, tail) == __DISABLED_CHAR) in inq_canon()
2406 struct n_tty_data *ldata = tty->disc_data; in n_tty_ioctl() local
2415 retval = inq_canon(ldata); in n_tty_ioctl()
2417 retval = read_cnt(ldata); in n_tty_ioctl()