linux-kernel - Re: [PATCH v2 0/4] Stylus-on-touchscreen device support

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Date:   Mon, 3 May 2021 11:39:34 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     наб <nabijaczleweli@...ijaczleweli.xyz>,
        Peter Hutterer <peter.hutterer@...-t.net>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/4] Stylus-on-touchscreen device support

On Mon, May 3, 2021 at 11:11 AM Jiri Kosina <jikos@...nel.org> wrote:
>
> On Tue, 20 Apr 2021, наб wrote:
>
> > > This patchset adds support for stylus-on-touchscreen devices as found on
> > > the OneMix 3 Pro and Dell Inspiron 15 7000 2-in-1 (7591), among others;
> > > with it, they properly behave like a drawing tablet.
> > >
> > > Patches 2 and 4 funxionally depend on patch 1.
> > > Patch 4 needs patch 3 to apply.
> > >
> > > The output of this patchset and the need for a kernel, rather than
> > > userspace, patch was previously discussed here:
> > >   https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/558#note_792834
> > >
> > > Changes in v2:
> > > Patch 4 now ANDs the secondary button with the tip switch,
> > > since it's otherwise borderline useless to the user.
> > >
> > > Ahelenia Ziemiańska (4):
> > >   HID: multitouch: require Finger field to mark Win8 reports as MT
> > >   HID: multitouch: set Stylus suffix for Stylus-application devices, too
> > >   HID: input: replace outdated HID numbers+comments with macros
> > >   HID: input: work around Win8 stylus-on-touchscreen reporting
> > >
> > >  drivers/hid/hid-input.c      | 54 ++++++++++++++++++++++++++++++++++--
> > >  drivers/hid/hid-multitouch.c | 18 +++++++-----
> > >  2 files changed, 62 insertions(+), 10 deletions(-)
> > >
> > > --
> > > 2.20.1
> >
> > Bumping this after a monthish ‒ is it missing something? Am I?
>
> Benjamin had concerns about regressions and wanted to run a full battery
> of testing on it.
>
> Benjamin, is there any outcome of that, please?
>

Sorry, no real outcome here.

I ran the test suite, and there were no errors, until I realized that
there are no tests regarding tablets, so it can't detect any
regressions here.
And then, the usual happens, no time to actually work on the test suite... :(

I'll do a "normal" review soon (i.e. today)

Cheers,
Benjamin