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path: root/target/linux/generic/patches-2.6.38/801-usb_serial_endpoint_size.patch
blob: 3725b922ce3b6a8d64e0c299006bb92af1458429 (plain)
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--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -61,6 +61,7 @@ static struct usb_driver usb_serial_driv
    drivers depend on it.
 */
 
+static ushort maxSize = 0;
 static int debug;
 /* initially all NULL */
 static struct usb_serial *serial_table[SERIAL_TTY_MINORS];
@@ -913,7 +914,7 @@ int usb_serial_probe(struct usb_interfac
 		}
 		buffer_size = serial->type->bulk_in_size;
 		if (!buffer_size)
-			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);
@@ -1392,3 +1393,5 @@ 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");