[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: Closing a serial device takes one second
marc%msys.ch@localhost (Marc Balmer) writes:
>I found similar code in usb/ucom.c. It makes no sense to hardcode a 1
>sec delay in the driver. If you open/close a device frequently, it
>totally slows down your application.
That's exactly what it is supposed to do, even when waiting in close
is bad and waiting in open would be better.
If your application _knows_ that the device doesn't support DTR,
then it can tell the driver to not send the hangup signal by
clearing the control flag HUPCL.
Main Index |
Thread Index |