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authorJohan Hovold <jhovold@gmail.com>2012-01-18 01:46:00 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-24 20:20:11 +0100
commit108e02b12921078a59dcacd048079ece48a4a983 (patch)
tree4fa48e2d3dc67133757f6272135dbdfe7f050b94 /drivers/usb
parentUSB: ftdi_sio: fix TIOCSSERIAL baud_base handling (diff)
downloadlinux-108e02b12921078a59dcacd048079ece48a4a983.tar.xz
linux-108e02b12921078a59dcacd048079ece48a4a983.zip
USB: ftdi_sio: fix initial baud rate
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>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/serial/ftdi_sio.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index ff5a8e172a34..7dbdf1e7684d 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -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);