rem: void prep_PIO_transfer( ide_device_info *device, ide_qrequest *qrequest )
add: prep_PIO_transfer(ide_device_info *device, ide_qrequest *qrequest)
context: void prep_PIO_transfer( ide_device_info *device, ide_qrequest *qrequest ){	SHOW_FLOW0( 4, "" );		device->left_sg_elem = qrequest->request->sg_cnt;	device->cur_sg_elem = qrequest->request->sg_list;	device->cur_sg_ofs = 0;	device->has_odd_byte = false;	qrequest->request->data_resid = qrequest->request->data_len;}