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Commit 93a8d416 authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman
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n_tty: Fix EOF push index when termios changes 



Commit 40d5e090,
'n_tty: Fix EOF push handling' introduced a subtle state
change error wrt EOF push handling when the termios is
changed from non-canonical to canonical mode.

Reset line_start to the current read_tail index, not 0.

Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0b538612

drivers/tty/n_tty.c

+1 −2
Original line number Diff line number Diff line
@@ -1758,8 +1758,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) 
		canon_change = (old->c_lflag ^ tty->termios.c_lflag) & ICANON;

	if (canon_change) {

		bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);

		ldata->line_start = 0;

		ldata->canon_head = ldata->read_tail;

		ldata->line_start = ldata->canon_head = ldata->read_tail;

		ldata->erasing = 0;

		ldata->lnext = 0;

	}