On Tue, May 11, 2010 at 10:57:07AM -0400, Alan Stern wrote: > There are no calls to any dma_sync_* routines. Daniel will have to > check me on this, but I believe that urb->transfer_buffer is filled > before dma_map_single() is called and it isn't touched again until > after dma_unmap_single() (which occurs before urb's completion handler > is called). Yes, that's correct. Sorry fot the misleading information I gave. The code doesn't to any weird tricks as it currently stands. It fills the buffer, submits the URB and doesn't touch the buffer contents afterwards. Daniel -- 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
