This warning seems to indicate that the .write_room function is being called when the device is not open. It's not clear to me why that condition justifies a warning, though. Other tty devices don't seem to care so much.
This warning seems to indicate that the .write_room function is being called when the device is not open. It's not clear to me why that condition justifies a warning, though. Other tty devices don't seem to care so much.