From 25e8d0ed75a6b3e7c2f533f0460a48f903d94269 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 11 Feb 2014 18:55:30 -0500 Subject: n_tty: Simplify input_available_p() Greg, Please note this patch requires n_tty: Fix poll() when TIME_CHAR and MIN_CHAR == 0 Regards, Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'drivers/tty/n_tty.c') diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index d15624c1b751..41fe8a047d37 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1900,13 +1900,10 @@ static inline int input_available_p(struct tty_struct *tty, int poll) struct n_tty_data *ldata = tty->disc_data; int amt = poll && !TIME_CHAR(tty) && MIN_CHAR(tty) ? MIN_CHAR(tty) : 1; - if (ldata->icanon && !L_EXTPROC(tty)) { - if (ldata->canon_head != ldata->read_tail) - return 1; - } else if (read_cnt(ldata) >= amt) - return 1; - - return 0; + if (ldata->icanon && !L_EXTPROC(tty)) + return ldata->canon_head != ldata->read_tail; + else + return read_cnt(ldata) >= amt; } /** -- cgit v1.2.2