--- zzzz-none-000/linux-2.6.19.2/drivers/usb/core/message.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5504/linux-2.6.19.2/drivers/usb/core/message.c	2007-01-11 07:38:19.000000000 +0000
@@ -828,7 +828,10 @@
  * Context: !in_interrupt ()
  *
  * Updates the copy of the device descriptor stored in the device structure,
- * which dedicates space for this purpose.
+ * which dedicates space for this purpose.  Note that several fields are
+ * converted to the host CPU's byte order:  the USB version (bcdUSB), and
+ * vendors product and version fields (idVendor, idProduct, and bcdDevice).
+ * That lets device drivers compare against non-byteswapped constants.
  *
  * Not exported, only for use by the core.  If drivers really want to read
  * the device descriptor directly, they can call usb_get_descriptor() with