Re: udev or kernel broken with rsdl 0.30 patch

[Kay Sievers <kay.sievers@vrfy.org>]

On Fri, 2007-03-16 at 11:06 +0100, Andreas Jellinghaus wrote:
> Am Donnerstag, 15. März 2007 20:57 schrieb Kay Sievers:
> > > why are the endpointes removed and added in the working case?
> > > the device is unchanged.
> >
> > Don't know what's with the endpoints, but what device event do you miss?
> > It looks like it's all there in the udevmonitor output, right?
> 
> it was not a missing event.

Well, you wrote: "why udev/kernel emit less events?" :)

> the problem is the events are the same, the
> hardware is the same, the configuration is the same, and still in one
> cases udev runs the openct hook, and in the other case it does not.
> 
> maybe it has trouble looking at the sysfs files or something?
> 
> if I strace udevd it always works fine. if the system has high load too.
> looks like a classic race condition to me.

You mean, that the /proc file is not there, when you get the event with
$DEVICE? It is "broken" since it exists, you have to wait until it shows
up.
Or don't use it at all, and hook into the "usb_device" event and use the
files in /dev with the same layout, instead of the crappy usbfs files.

Thanks,
Kay


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