diff -ur linux-2.6.11-r1-clean/drivers/usb/serial/ftdi_sio.c linux-2.6.11-r1-ftdio_fix/drivers/usb/serial/ftdi_sio.c
--- linux-2.6.11-r1-panoramix/drivers/usb/serial/ftdi_sio.c	Wed Jan 12 09:19:32 2005
+++ linux-2.6.11-r1-ftdio_fix/drivers/usb/serial/ftdi_sio.c	Thu Jan 20 16:20:24 2005
@@ -1137,7 +1137,7 @@
 		goto check_and_exit;
 	}
 
-	if ((new_serial.baud_base != priv->baud_base) ||
+	if ((new_serial.baud_base != priv->baud_base) &&
 	    (new_serial.baud_base < 9600))
 		return -EINVAL;