linux-kernel - Re: [PATCH] HID: rmi: fallback to generic/multitouch if hid-rmi is not built (was Re: [GIT PULL] HID for 4.11)

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Message-ID: <20170221174226.GB21560@mail.corp.redhat.com>
Date:   Tue, 21 Feb 2017 18:42:26 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Jiri Kosina <jikos@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Duggan <aduggan@...aptics.com>,
        Ping Cheng <pinglinux@...il.com>,
        Jason Gerecke <jason.gerecke@...om.com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH] HID: rmi: fallback to generic/multitouch if hid-rmi is
 not built (was Re: [GIT PULL] HID for 4.11)

On Feb 21 2017 or thereabouts, Linus Torvalds wrote:
> On Tue, Feb 21, 2017 at 7:46 AM, Jiri Kosina <jikos@...nel.org> wrote:
> > On Tue, 21 Feb 2017, Linus Torvalds wrote:
> >>
> >> .. and maybe we should do this same thing for the WACOM case a couple
> >> of lines up from your patch?
> >
> > Well, that's far more questionable. I am pretty sure Wacom devices are
> > completely dysfunctional without a specific driver, as they have their own
> > protocol.
> 
> Ah, ok. Never mind then.
> 
>             Linus

Well, Wacom devices use to need a special driver, but the latest
generation should somewhat be able to work without a driver (IIRC).
The only thing I can think of is that Wacom devices require
HID_QUIRK_NO_INIT_REPORTS, so they might not work out of the box after
all.

Let's see what Ping and Jason think about the question.

Cheers,
Benjamin