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n_tty: Move chars_in_buffer() to factor throttle/unthrottle

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Prepare to factor throttle and unthrottle into helper functions;
relocate chars_in_buffer() to avoid forward declaration.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2013-06-15 09:14:32 -04:00 committed by Greg Kroah-Hartman
parent d8c1f929aa
commit 9a4aec2dd5
1 changed files with 12 additions and 12 deletions
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24
drivers/tty/n_tty.c
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@ -202,6 +202,18 @@ static void n_tty_set_room(struct tty_struct *tty)
}
}
static ssize_t chars_in_buffer(struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
ssize_t n = 0;
if (!ldata->icanon)
n = read_cnt(ldata);
else
n = ldata->canon_head - ldata->read_tail;
return n;
}
/**
* put_tty_queue - add character to tty
* @c: character
@ -285,18 +297,6 @@ static void n_tty_flush_buffer(struct tty_struct *tty)
up_write(&tty->termios_rwsem);
}
static ssize_t chars_in_buffer(struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
ssize_t n = 0;
if (!ldata->icanon)
n = read_cnt(ldata);
else
n = ldata->canon_head - ldata->read_tail;
return n;
}
/**
* n_tty_chars_in_buffer - report available bytes
* @tty: tty device