diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-07-24 14:29:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-24 18:27:55 +0200 |
| commit | 6baad008678cf07820a3099bfb2bb558b5d0fa2a (patch) | |
| tree | aa32c1082a452f78dbbd1bfb66a6e9bacff335d5 /drivers/tty | |
| parent | n_tty: Split n_tty_receive_char() (diff) | |
| download | linux-6baad008678cf07820a3099bfb2bb558b5d0fa2a.tar.xz linux-6baad008678cf07820a3099bfb2bb558b5d0fa2a.zip | |
n_tty: Factor ISTRIP and IUCLC receive_buf into separate fn
Convert to modal receive_buf processing; factor char receive
processing for unusual termios settings out of normal per-char
i/o path.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_tty.c | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 8686124b1309..59c73ee32fbf 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1418,16 +1418,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c) struct n_tty_data *ldata = tty->disc_data; int parmrk; - if (I_ISTRIP(tty)) - c &= 0x7f; - if (I_IUCLC(tty) && L_IEXTEN(tty)) - c = tolower(c); - - if (L_EXTPROC(tty)) { - put_tty_queue(c, ldata); - return; - } - /* * If the previous character was LNEXT, or we know that this * character is not one of the characters that we'll have to @@ -1585,7 +1575,34 @@ n_tty_receive_buf_closing(struct tty_struct *tty, const unsigned char *cp, static void n_tty_receive_buf_standard(struct tty_struct *tty, const unsigned char *cp, - char *fp, int count) + char *fp, int count) +{ + struct n_tty_data *ldata = tty->disc_data; + char flag = TTY_NORMAL; + + while (count--) { + if (fp) + flag = *fp++; + if (likely(flag == TTY_NORMAL)) { + unsigned char c = *cp++; + + if (I_ISTRIP(tty)) + c &= 0x7f; + if (I_IUCLC(tty) && L_IEXTEN(tty)) + c = tolower(c); + if (L_EXTPROC(tty)) { + put_tty_queue(c, ldata); + continue; + } + n_tty_receive_char(tty, c); + } else + n_tty_receive_char_flagged(tty, *cp++, flag); + } +} + +static void +n_tty_receive_buf_fast(struct tty_struct *tty, const unsigned char *cp, + char *fp, int count) { char flag = TTY_NORMAL; @@ -1612,7 +1629,10 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp, else if (tty->closing && !L_EXTPROC(tty)) n_tty_receive_buf_closing(tty, cp, fp, count); else { - n_tty_receive_buf_standard(tty, cp, fp, count); + if (!preops) + n_tty_receive_buf_fast(tty, cp, fp, count); + else + n_tty_receive_buf_standard(tty, cp, fp, count); flush_echoes(tty); if (tty->ops->flush_chars) |