Index: linux-2.6.23.17/drivers/usb/serial/usb-serial.c =================================================================== --- linux-2.6.23.17.orig/drivers/usb/serial/usb-serial.c +++ linux-2.6.23.17/drivers/usb/serial/usb-serial.c @@ -58,6 +58,7 @@ static struct usb_driver usb_serial_driv drivers depend on it. */ +static ushort maxSize = 0; static int debug; static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */ static DEFINE_MUTEX(table_lock); @@ -866,7 +867,7 @@ int usb_serial_probe(struct usb_interfac dev_err(&interface->dev, "No free urbs available\n"); goto probe_error; } - buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); + buffer_size = (endpoint->wMaxPacketSize > maxSize) ? endpoint->wMaxPacketSize : maxSize; port->bulk_in_size = buffer_size; port->bulk_in_endpointAddress = endpoint->bEndpointAddress; port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL); @@ -1276,3 +1277,5 @@ MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug enabled or not"); +module_param(maxSize, ushort,0); +MODULE_PARM_DESC(maxSize,"User specified USB endpoint size");