Hello, I had a look into the poll() fix and the open file descriptor issue. I added the fix, but the section with the fix is never called. I also found a way to get the open count in dev_open() of inode.c. Using atom_read(&fd->f_count) I see a count of 1 when the problem occurs. Anyone got a clue when this counter is increased - only when dev_open() returns successfully or when the app calls open()? So it seems I have to find a missing open fd. = Risk Management of Having China Business risk management solution retains your profit in having China business. http://a8-asy.a8ww.net/a8-ads/adftrclick?redirectid=f66105ca4e52379522d070f24bd591cb -- Powered by Outblaze -- 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