Date: Thu, 3 Jan 2019 13:36:08 +0100 From: Ludovic Rousseau <ludovic.rousseau@gmail.com> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-usb@freebsd.org Subject: Re: r342378: usbconfig takes 3-5 minutes to read the bus Message-ID: <CAGstE8B6RxBqBG9uqUXc60JcsB6=-QcmN1Q4kTgbgwoWGVaNyA@mail.gmail.com> In-Reply-To: <34dfc02b-b252-9f38-a905-31a713012c6a@selasky.org> References: <3ac801b2-899a-ee09-1398-ecab6ec7130a@selasky.org> <20190102104853.GA2622@c720-r342378> <4bf80067-8e3a-572f-c1b5-ae83b1c40c22@selasky.org> <20190102154701.GA13702@c720-r342378> <2f013cf9-b073-04fd-9932-079f86fa24b1@selasky.org> <d0f569af-342f-dac8-8f6d-4fc0ff21924e@selasky.org> <20190103060431.GA2711@c720-r342378> <5950d771-ffa9-9325-b102-295fd092052e@selasky.org> <20190103094850.GA2595@c720-r342378> <076e01a2-51e7-b140-28c9-1c58d034327b@selasky.org> <20190103113512.GA2547@c720-r342378> <34dfc02b-b252-9f38-a905-31a713012c6a@selasky.org>
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I hope this email will go to freebsd-usb@ since I am not a member of this list.
Le jeu. 3 janv. 2019 à 13:19, Hans Petter Selasky <hps@selasky.org> a écrit :
>
> On 1/3/19 12:35 PM, Matthias Apitz wrote:
> > but is doing so 3000++ times:
> >
> > $ dmesg | grep 'PID 544' | wc -l
> > 3441
> >
> > This proc is started by devd(8) with that devd(8) hook:
> >
>
> Hi,
>
> Basically pcscd is congesting the enumeration SX lock, preventing
> usbconfig from running because it tries to open the same USB device over
> and over again. I'm not sure why, but it can have something to do with
> how you start pcscd.
>
> Can you try to use the example rules given by the pcscd packet message?
>
> attach 100 {
> device-name "ugen[0-9]+";
> action "/usr/local/sbin/pcscd -H";
> };
>
> detach 100 {
> device-name "ugen[0-9]+";
> action "/usr/local/sbin/pcscd -H";
> };
>
> Maybe there is a bug in pcsd that it tries to open the same USB device
> over and over again if there is an libusb error? Maybe it should sleep a
> bit before trying to re-enumerate devices?
>
> I'm CC'ing Ludovic Rousseau, in case he has any comments.
You can enable pcscd hotplug debug by editing DEBUG_HOTPLUG at
https://salsa.debian.org/rousseau/PCSC/blob/master/src/hotplug_libusb.c#L69
A pcscd trace would be helpful. See https://pcsclite.apdu.fr/#support
Bye
--
Dr. Ludovic Rousseau
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