Commit 9a4aec2d authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman

n_tty: Move chars_in_buffer() to factor throttle/unthrottle

Prepare to factor throttle and unthrottle into helper functions;
relocate chars_in_buffer() to avoid forward declaration.
Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d8c1f929
...@@ -202,6 +202,18 @@ static void n_tty_set_room(struct tty_struct *tty) ...@@ -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 * put_tty_queue - add character to tty
* @c: character * @c: character
...@@ -285,18 +297,6 @@ static void n_tty_flush_buffer(struct tty_struct *tty) ...@@ -285,18 +297,6 @@ static void n_tty_flush_buffer(struct tty_struct *tty)
up_write(&tty->termios_rwsem); 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 * n_tty_chars_in_buffer - report available bytes
* @tty: tty device * @tty: tty device
......
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