From f95499c3030fe1bfad57745f2db1959c5b43dca8 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sat, 15 Jun 2013 09:14:29 -0400 Subject: [PATCH] n_tty: Don't wait for buffer work in read() loop User-space read() can run concurrently with receiving from device; waiting for receive_buf() to complete is not required. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index fe1c39992c51..a6eea30d0911 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1724,7 +1724,6 @@ static inline int input_available_p(struct tty_struct *tty, int amt) { struct n_tty_data *ldata = tty->disc_data; - tty_flush_to_ldisc(tty); if (ldata->icanon && !L_EXTPROC(tty)) { if (ldata->canon_head != ldata->read_tail) return 1; -- 2.20.1