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SubjectRe: Crash caused by hid-rmi and no longer working touchscreen
On Mon, Apr 10, 2017 at 03:18:03PM +0200, Jiri Kosina wrote:
>
> [ a couple more people from "the other regression thread" added to CC ]
>
> On Mon, 10 Apr 2017, Gabriele Mazzotta wrote:
>
> > Hi,
> >
> > I'm having troubles with hid-rmi using 4.11-rc6. I'm getting some
> > "rmi_hid_read_block: timeout elapsed" errors and ultimately the
> > crash you can see at the end of this mail. I will reply to this
> > mail with a full log that shows all the errors.
> >
> > The problem seems to be caused by commit 279967a65b320d174a507498ae
> > ("HID: rmi: Handle all Synaptics touchpads using hid-rmi").
> >
> > My laptop has a Synaptics touchpad and a Synaptics touchscreen.
> > Because of that commit, hid-rmi is used for both the devices, while
> > it has always been used only for the touchpad. Needless to say that
> > the touchscreen no longer works.
> >
> > If I revert that commit, everything goes back to normal.
>
> Alright, given this is a second regression cause by this switch, I suggest
> to revert this one for 4.11 still, and work on fixing this properly for
> 4.12.
>
> If noone raises any objections (a few more people added to Cc), I'll queue
> a 4.11-rc revert tomorrow.

Yes, we also have this:

https://bugzilla.kernel.org/show_bug.cgi?id=195287

so reverting seems prudent at this time.

Thanks.

--
Dmitry

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