From: Alan Cox <alan@linux.intel.com>
Date: Sat, 19 Sep 2009 20:13:24 +0000 (-0700)
Subject: tty: remove dtr/rts use from the driver open methods
X-Git-Tag: v2.6.31.2~91
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55b664beda5a2990afb7e4ec809792e34753fe4e;p=thirdparty%2Fkernel%2Fstable.git

tty: remove dtr/rts use from the driver open methods

commit 9a68e39d4a701fb3be03cae9b462408664ebd205 upstream.

These are handled by the tty_port core code which will raise and lower the
carrier correctly in tty_wait_until_ready

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 985cbcf48bda8..b5275c4a8eedf 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -399,12 +399,6 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port,
 
 	/* Configure the termios structure */
 	cp210x_get_termios(tty, port);
-
-	/* Set the DTR and RTS pins low */
-	cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data
-			: port,
-		NULL, TIOCM_DTR | TIOCM_RTS, 0);
-
 	return 0;
 }