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USB: ftdi_sio: fix initial baud rate

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Fix regression introduced by commit b1ffb4c851f1 ("USB: Fix Corruption
issue in USB ftdi driver ftdi_sio.c") which caused the termios settings
to no longer be initialised at open. Consequently it was no longer
possible to set the port to the default speed of 9600 baud without first
changing to another baud rate and back again.

Reported-by: Roland Ramthun <mail@roland-ramthun.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Tested-by: Roland Ramthun <mail@roland-ramthun.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Johan Hovold 2012-01-18 01:46:00 +01:00 committed by Greg Kroah-Hartman
parent eb833a9e09
commit 108e02b129
1 changed files with 5 additions and 2 deletions
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7
drivers/usb/serial/ftdi_sio.c
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@ -1823,6 +1823,7 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port)
static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct ktermios dummy;
struct usb_device *dev = port->serial->dev;
struct ftdi_private *priv = usb_get_serial_port_data(port);
int result;
@ -1841,8 +1842,10 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
This is same behaviour as serial.c/rs_open() - Kuba */
/* ftdi_set_termios will send usb control messages */
if (tty)
ftdi_set_termios(tty, port, tty->termios);
if (tty) {
memset(&dummy, 0, sizeof(dummy));
ftdi_set_termios(tty, port, &dummy);
}
/* Start reading from the device */
result = usb_serial_generic_open(tty, port);