From ad0cc7bafe498fb299043582e822fc4e74388edb Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sat, 15 Jun 2013 10:21:27 -0400 Subject: [PATCH] n_tty: Factor tty->closing receive_buf() into separate fn Convert to modal receive_buf() processing; factor receive char processing when tty->closing into n_tty_receive_buf_closing(). Note that EXTPROC when ISTRIP or IUCLC is set continues to be handled by n_tty_receive_char(). Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 50 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 39 insertions(+), 11 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index e9cfc77a1279..ed6c4e4d960a 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1276,17 +1276,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) process_echoes(tty); } - if (tty->closing) { - if (I_IXON(tty)) { - if (c == START_CHAR(tty)) { - start_tty(tty); - process_echoes(tty); - } else if (c == STOP_CHAR(tty)) - stop_tty(tty); - } - return; - } - /* * If the previous character was LNEXT, or we know that this * character is not one of the characters that we'll have to @@ -1463,6 +1452,27 @@ handle_newline: put_tty_queue(c, ldata); } +static inline void +n_tty_receive_char_closing(struct tty_struct *tty, unsigned char c) +{ + if (I_ISTRIP(tty)) + c &= 0x7f; + if (I_IUCLC(tty) && L_IEXTEN(tty)) + c = tolower(c); + + if (I_IXON(tty)) { + if (c == STOP_CHAR(tty)) + stop_tty(tty); + else if (c == START_CHAR(tty) || + (tty->stopped && !tty->flow_stopped && I_IXANY(tty) && + c != INTR_CHAR(tty) && c != QUIT_CHAR(tty) && + c != SUSP_CHAR(tty))) { + start_tty(tty); + process_echoes(tty); + } + } +} + static void n_tty_receive_char_flagged(struct tty_struct *tty, unsigned char c, char flag) { @@ -1542,6 +1552,22 @@ n_tty_receive_buf_raw(struct tty_struct *tty, const unsigned char *cp, } } +static void +n_tty_receive_buf_closing(struct tty_struct *tty, const unsigned char *cp, + char *fp, int count) +{ + char flag = TTY_NORMAL; + + while (count--) { + if (fp) + flag = *fp++; + if (likely(flag == TTY_NORMAL)) + n_tty_receive_char_closing(tty, *cp++); + else + n_tty_receive_char_flagged(tty, *cp++, flag); + } +} + static void __receive_buf(struct tty_struct *tty, const unsigned char *cp, char *fp, int count) { @@ -1552,6 +1578,8 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp, n_tty_receive_buf_real_raw(tty, cp, fp, count); else if (ldata->raw || (L_EXTPROC(tty) && !preops)) n_tty_receive_buf_raw(tty, cp, fp, count); + else if (tty->closing && !L_EXTPROC(tty)) + n_tty_receive_buf_closing(tty, cp, fp, count); else { char flag = TTY_NORMAL; -- 2.20.1