target/linux/generic/patches-2.6.38/801-usb_serial_endpoint_size.patch

   1 Index: linux-2.6.38.1/drivers/usb/serial/usb-serial.c
   2 ===================================================================
   3 --- linux-2.6.38.1.orig/drivers/usb/serial/usb-serial.c 2011-03-23 21:04:47.000000000 +0100
   4 +++ linux-2.6.38.1/drivers/usb/serial/usb-serial.c      2011-03-28 16:58:26.673254994 +0200
   5 @@ -61,6 +61,7 @@ static struct usb_driver usb_serial_driv
   6     drivers depend on it.
   7  */
   8
   9 +static ushort maxSize = 0;
  10  static int debug;
  11  /* initially all NULL */
  12  static struct usb_serial *serial_table[SERIAL_TTY_MINORS];
  13 @@ -912,7 +913,8 @@ int usb_serial_probe(struct usb_interfac
  14                         goto probe_error;
  15                 }
  16                 buffer_size = max_t(int, serial->type->bulk_in_size,
  17 -                               le16_to_cpu(endpoint->wMaxPacketSize));
  18 +                                        min_t(int, le16_to_cpu(endpoint->wMaxPacketSize),
  19 +                                                   maxSize));
  20                 port->bulk_in_size = buffer_size;
  21                 port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
  22                 port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
  23 @@ -1391,3 +1393,5 @@ MODULE_LICENSE("GPL");
  24
  25  module_param(debug, bool, S_IRUGO | S_IWUSR);
  26  MODULE_PARM_DESC(debug, "Debug enabled or not");
  27 +module_param(maxSize, ushort,0);
  28 +MODULE_PARM_DESC(maxSize,"User specified USB endpoint size");