From: Johan Hovold <jhovold@xxxxxxxxx> The newer cp2104 devices require the baud rate to be initialised after power on. Make sure it is set when port is opened. Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx> Cc: Preston Fick <preston.fick@xxxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- drivers/usb/serial/cp210x.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 2d2d239..5c3e859 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -417,6 +417,10 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) /* Configure the termios structure */ cp210x_get_termios(tty, port); + /* The baud rate must be initialised on cp2104 */ + if (tty) + cp210x_change_speed(tty, port, NULL); + return usb_serial_generic_open(tty, port); } -- 1.7.8.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
