> What has happened is that the API now blocks when a Serial device is not > indicating it is ready. This included 'open' on a serial device which > now can block. The API has always specified that (its required by POSIX). Some hardware now gained support for it that was lacking > Since lots of RS232 serial devices do not bother with any control > signals such as DCD (data carrier detect) they never indicate they are > ready and open blocks. This is the 'HANG' we are seeing. .." You can open a port with O_NDELAY, you can also set the port flags to indicate no flow control via the termios functions. Alan -- 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
