diff options
| -rw-r--r-- | drivers/tty/n_tty.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index a69470e02bf4..c1c721fa8766 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -96,7 +96,6 @@ struct n_tty_data { /* must hold exclusive termios_rwsem to reset these */ unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; - unsigned char echo_overrun:1; /* shared by producer and consumer */ char *read_buf; @@ -326,7 +325,7 @@ static void reset_buffer_flags(struct n_tty_data *ldata) ldata->read_head = ldata->canon_head = ldata->read_tail = 0; mutex_lock(&ldata->echo_lock); - ldata->echo_pos = ldata->echo_cnt = ldata->echo_overrun = 0; + ldata->echo_pos = ldata->echo_cnt = 0; mutex_unlock(&ldata->echo_lock); ldata->erasing = 0; @@ -782,14 +781,11 @@ static void process_echoes(struct tty_struct *tty) if (nr == 0) { ldata->echo_pos = 0; ldata->echo_cnt = 0; - ldata->echo_overrun = 0; } else { int num_processed = ldata->echo_cnt - nr; ldata->echo_pos += num_processed; ldata->echo_pos &= N_TTY_BUF_SIZE - 1; ldata->echo_cnt = nr; - if (num_processed > 0) - ldata->echo_overrun = 0; } mutex_unlock(&ldata->echo_lock); @@ -835,8 +831,6 @@ static void add_echo_byte(unsigned char c, struct n_tty_data *ldata) ldata->echo_pos++; } ldata->echo_pos &= N_TTY_BUF_SIZE - 1; - - ldata->echo_overrun = 1; } else { new_byte_pos = ldata->echo_pos + ldata->echo_cnt; new_byte_pos &= N_TTY_BUF_SIZE - 1; |