Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5e28cca1 authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman
Browse files

n_tty: Simplify throttle threshold calculation 



The adjustments performed by receive_room() are to ensure a line
termination can always be written to the read buffer. However,
these adjustments are irrelevant to the throttle threshold (because
the threshold < buffer limit).

Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a342846f

drivers/tty/n_tty.c

+1 −1
Original line number Diff line number Diff line
@@ -262,7 +262,7 @@ static void n_tty_check_throttle(struct tty_struct *tty) 
	while (1) {

		int throttled;

		tty_set_flow_change(tty, TTY_THROTTLE_SAFE);

		if (receive_room(tty) >= TTY_THRESHOLD_THROTTLE)

		if (N_TTY_BUF_SIZE - read_cnt(ldata) >= TTY_THRESHOLD_THROTTLE)

			break;

		throttled = tty_throttle_safe(tty);

		if (!throttled)