diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 18:21:24 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-24 04:10:17 +0400 |
| commit | d2f8d7abd1e7ac04a0b42df36b53fef00d5d73aa (patch) | |
| tree | 5d1bcd616e7ff4d630e270e5e77f547e4315e0ec /drivers/tty/n_tty.c | |
| parent | b0ac50be1f398ae1daedcf1ce71ac6b6409c88d2 (diff) | |
| download | linux-d2f8d7abd1e7ac04a0b42df36b53fef00d5d73aa.tar.xz | |
n_tty: Factor flagged char handling into separate fn
Prepare for modal receive_buf() handling; factor handling for
TTY_BREAK, TTY_PARITY, TTY_FRAME and TTY_OVERRUN into
n_tty_receive_char_flagged().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_tty.c')
| -rw-r--r-- | drivers/tty/n_tty.c | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 68fc4c347970..6aa90332dd3e 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1468,6 +1468,29 @@ handle_newline: put_tty_queue(c, ldata); } +static void +n_tty_receive_char_flagged(struct tty_struct *tty, unsigned char c, char flag) +{ + char buf[64]; + + switch (flag) { + case TTY_BREAK: + n_tty_receive_break(tty); + break; + case TTY_PARITY: + case TTY_FRAME: + n_tty_receive_parity_error(tty, c); + break; + case TTY_OVERRUN: + n_tty_receive_overrun(tty); + break; + default: + printk(KERN_ERR "%s: unknown flag %d\n", + tty_name(tty, buf), flag); + break; + } +} + /** * n_tty_receive_buf - data receive * @tty: terminal device @@ -1511,34 +1534,19 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp, char *fp, int count) { struct n_tty_data *ldata = tty->disc_data; - char flags = TTY_NORMAL; - char buf[64]; if (ldata->real_raw) n_tty_receive_buf_real_raw(tty, cp, fp, count); else { + char flag = TTY_NORMAL; + while (count--) { if (fp) - flags = *fp++; - switch (flags) { - case TTY_NORMAL: + flag = *fp++; + if (likely(flag == TTY_NORMAL)) n_tty_receive_char(tty, *cp++); - break; - case TTY_BREAK: - n_tty_receive_break(tty); - break; - case TTY_PARITY: - case TTY_FRAME: - n_tty_receive_parity_error(tty, *cp++); - break; - case TTY_OVERRUN: - n_tty_receive_overrun(tty); - break; - default: - printk(KERN_ERR "%s: unknown flag %d\n", - tty_name(tty, buf), flags); - break; - } + else + n_tty_receive_char_flagged(tty, *cp++, flag); } flush_echoes(tty); |