Re: USB hid blocks USB port in 2.6.28rc3

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On Tue, 11 Nov 2008, Andi Kleen wrote:

> > It does.  The problem is on the other side: Your power switch presents 
> > itself as an HID device, so when it is _detected_ it binds to usbhid.
> 
> Ok, but it worked in all kernels before. Why has that changed?

I don't know.

> So you're saying that sispm should be changed to not do something?
> What something exactly? And it would work then?

It should be changed either to:

	Not do Set-Configuration, or

	Detach the HID driver before doing the Set-Configuration.

Either of these should allow it to work.

> And why exactly does what it used to do before not work anymore now?

This is a repeat of your first question above.  I still don't know.

If you're interested in finding out the answer, here's what you should
do.  First, as Jiri and I have both suggested, post the contents of
your /proc/bus/usb/devices.  Second, post copies of the full system log
for both old and new kernels with the usbfs_snoop module parameter set.

Alan Stern

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