4021 struct urb *usb_buffer_map (struct urb *urb)  in usb_buffer_map()  argument
4026   if (!urb  in usb_buffer_map()
4027       || !urb->dev  in usb_buffer_map()
4028       || !(bus = urb->dev->bus)  in usb_buffer_map()
4082     urb->transfer_dma = ~0;  in usb_buffer_map()
4083   urb->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP  in usb_buffer_map()
4085   return urb;  in usb_buffer_map()
4121 void usb_buffer_dmasync (struct urb *urb)  in usb_buffer_dmasync()  argument
4126   if (!urb  in usb_buffer_dmasync()
4127       || !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)  in usb_buffer_dmasync()
4128       || !urb->dev  in usb_buffer_dmasync()
4129       || !(bus = urb->dev->bus)  in usb_buffer_dmasync()
4216 void usb_buffer_unmap (struct urb *urb)  in usb_buffer_unmap()  argument
4221   if (!urb  in usb_buffer_unmap()
4222       || !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)  in usb_buffer_unmap()
4223       || !urb->dev  in usb_buffer_unmap()
4224       || !(bus = urb->dev->bus)  in usb_buffer_unmap()
4276   urb->transfer_flags &= ~(URB_NO_TRANSFER_DMA_MAP  in usb_buffer_unmap()