David: When native scatter-gather support was added to the USB host controller drivers, the urb->sg field was defined to be a pointer to struct usb_sg_request. But as far as I can tell, it never gets used other than to access the underlying scatterlist structures. That is, every use of "urb->sg" is as a subexpression in "urb->sg->sg" (except for a few tests for NULL, which don't matter for this purpose). If the sg field were defined instead to be a pointer to struct scatterlist then we could avoid a bunch of extra dereferences and make the code cleaner. Is there any reason not to do this? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
