Re: xhci_hcd and Canon Lide 110 not playing well together

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On Mon, Oct 22, 2012 at 09:15:09PM +0200, Holger Hans Peter Freyther wrote:
> On Mon, Oct 22, 2012 at 10:01:04AM -0700, Sarah Sharp wrote:
> 
> Dear Sarah,
> 
> > > Maybe Sarah can give you some pointers on where to look next.
> > 
> > I've asked for a physical bus trace from one of our QA folks with the
> > same scanner.  I think that will shed some light on whether this is a
> > host-side bug or a software bug.  I do know that a certain set of
> > scanners don't work under Ivy Bridge/Panther Point xHCI hosts, I just
> > haven't had time to look at the bus trace to figure out why.
> 
> is there anything I can help with at this point in time? How high/low
> is this issue in your queue and do you know scanners that definately
> work with xHCI hosts?

I believe the scanners work under NEC/Rensas xHCI hosts, but not Intel
hosts.  So it is is an Intel specific issue.  I'll let you know if
there's anything you can do to help me.

I currently have 19 bugs in our tracking system (2 priority 1, 2 P2, 4
P3, and 10 P4 bugs).  Plus 4 todo items that may or may not be related
to said bugs.  The biggest challenge right now is the LPM code, which
causes I/O errors on USB hard drives that don't support it, and some
issues with suspend and hibernate.  Those are priority 1 bugs.

Your scanner issue is filed as a low priority (priority 4) bug because
there is a work-around.  For our scanner, if you unplug the device
between scanning pages, it works.  Does that work for you as well?

Sarah Sharp
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