Re: quirk ALWAYS_POLL needed with an unexpectedly high number of mice

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On Fri, 27 Mar 2015, Benjamin Tissoires wrote:

> Hmm... it looks like it's not host dependent unfortunately. We have a
> (private) bug report for RHEL 6 where a customer wants to use the
> following mouse:
> http://www.compsource.com/pn/2MOUSEU1L/Keytronics-228/
> 
> I bought one and was able to reproduce the need for the quirk on
> various systems.
> 
> Plus I noticed that if the mouse is raised over the surface (so the
> sensor does not report anything), the bug does not appear.
> 
> So, to me, the USB output queue is full given that it is not polled by
> the host and the chip within the USB mouse decides to
> disconnect/reconnect to empty the queue. So nothing host specific.

I am not questioning at all that it's needed for some devices.

But I am surprised by all-of-a-sudden flow for quirk addition for many 
distinct devices, all coming from the same source. I am afraid this might 
be false positive, and root-cause being somewhere else, causing us adding 
a lot of potentially unnecessary quirk entries.

-- 
Jiri Kosina
SUSE Labs
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