What to do if USB stack seems dead

[Ian Lepore]

On Sat, 2014-09-06 at 23:21 +0200, Hans Petter Selasky wrote:
> On 09/06/14 21:57, Maxim V FIlimonov wrote:
> > Lately, I've been heavily experimenting with different USB devices (for
> > instance, USB to TTL one, but that's another story), and at a moment I
> > encountered that the system doesn't react on new USB devices connected. The
> > connected devices work fine, though. The question is: what can I do in such a
> > case if I don't want to reboot my box?
> >
> 
> Hi,
> 
> If a TTY port is not closed, it will prevent other USB devices on that 
> particular USB controller from enumerating.
> 
> --HPS

What does that mean, "is not closed"?  You mean if I have any usb-serial
adapter tty device open, other device insert/remove events aren't
handled?

Or that if a usb-serial device is removed while the device is open, that
prevents other insert/remove events?

-- Ian