revert "keyspan: init termios properly"

Revert 7eea4364.

Lucy said:

  This patch will work with the 19HS but WILL BREAK all other Keyspan
  adapters.  It will take me a few days to get to looking at a correct fix but
  that keyspan_send_setup(port, 1) (and the '1' is the important part) must
  happen once when the port is first opened.  The cflag can just be set to
  whatever the normal default is for your serial environment.

So revert this again pending the proper fix.

Cc: Borislav Petkov <bbpetkov@yahoo.de>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Lucy McCoy <lucy@keyspan.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/usb/serial/keyspan.c

@@ -1215,12 +1215,14 @@ static int keyspan_chars_in_buffer (struct usb_serial_port *port)
 
 static int keyspan_open (struct usb_serial_port *port, struct file *filp)
 {
-	struct keyspan_port_private	*p_priv;
-	struct keyspan_serial_private	*s_priv;
-	struct usb_serial		*serial = port->serial;
+	struct keyspan_port_private 	*p_priv;
+	struct keyspan_serial_private 	*s_priv;
+	struct usb_serial 		*serial = port->serial;
 	const struct keyspan_device_details	*d_details;
 	int				i, err;
+	int				baud_rate, device_port;
 	struct urb			*urb;
+	unsigned int			cflag;
 
 	s_priv = usb_get_serial_data(serial);
 	p_priv = usb_get_serial_port_data(port);
@@ -1263,6 +1265,30 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp)
 		/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 0); */
 	}
 
+	/* get the terminal config for the setup message now so we don't
+	 * need to send 2 of them */
+
+	cflag = port->tty->termios->c_cflag;
+	device_port = port->number - port->serial->minor;
+
+	/* Baud rate calculation takes baud rate as an integer
+	   so other rates can be generated if desired. */
+	baud_rate = tty_get_baud_rate(port->tty);
+	/* If no match or invalid, leave as default */
+	if (baud_rate >= 0
+	    && d_details->calculate_baud_rate(baud_rate, d_details->baudclk,
+				NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
+		p_priv->baud = baud_rate;
+	}
+
+	/* set CTS/RTS handshake etc. */
+	p_priv->cflag = cflag;
+	p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
+
+	keyspan_send_setup(port, 1);
+	//mdelay(100);
+	//keyspan_set_termios(port, NULL);
+
 	return (0);
 }