linux-kernel - [PATCH 02/19] serial: 68328: Remove bogus ldisc reset

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Date:	Fri, 27 Nov 2015 16:38:59 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org,
	Andi Kleen <andi@...stfloor.org>,
	Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH 02/19] serial: 68328: Remove bogus ldisc reset

As the #warning indicates, the open-coded ldisc reset was always not ok.
Not only is this code long dead, but now it would have no effect as
the ldisc is destroyed when this driver's close() method returns; remove.

Signed-off-by: Peter Hurley <peter@...leysoftware.com>
---
 drivers/tty/serial/68328serial.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index 9a6aaf0..a190a37 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -1053,17 +1053,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
 		
 	tty_ldisc_flush(tty);
 	tty_port_tty_set(&info->tport, NULL);
-#warning "This is not and has never been valid so fix it"	
-#if 0
-	if (tty->ldisc.num != ldiscs[N_TTY].num) {
-		if (tty->ldisc.close)
-			(tty->ldisc.close)(tty);
-		tty->ldisc = ldiscs[N_TTY];
-		tty->termios.c_line = N_TTY;
-		if (tty->ldisc.open)
-			(tty->ldisc.open)(tty);
-	}
-#endif	
+
 	if (port->blocked_open) {
 		if (port->close_delay)
 			msleep_interruptible(jiffies_to_msecs(port->close_delay));
-- 
2.6.3

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