[CC: list trimmed] Alan: I just tried testing this under 2.6.31-rc4 plus gregkh-all-2.6.31-rc4.patch, and the results were pretty nasty. All I did was plug in my pl2303-based USB serial device and type "cat /dev/ttyUSB0". In serial_open(), the call to tty_port_block_til_ready() returned -512, whatever that means. The error path at the end of serial_open() then failed because it tried to release some mutexes that had already been released. Okay, I fixed that, and then tty_open() died trying to access deallocated memory. Do you have any idea what's going on or should I look more closely? Alan Stern -- 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