It seems (from inspecting libusb) that poll()ing a usbfs file descriptor for output can be used to determine when a urb can be reaped. A user has sent me a patch to our code that does this, and it actually does seem to work. So far, I haven't found any documentation on this. Is it okay for us to use this capability? Can anyone point me to documentation that formally describes how it works? -- Dave Mielke | 2213 Fox Crescent | The Bible is the very Word of God. Phone: 1-613-726-0014 | Ottawa, Ontario | http://Mielke.cc/bible/ EMail: Dave@xxxxxxxxx | Canada K2A 1H7 | http://FamilyRadio.org/ -- 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