linux-kernel - Re: [PATCH 2/2] Input: ektf2127

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 3 May 2024 06:37:22 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Andreas Kemnade <andreas@...nade.info>, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, hdegoede@...hat.com, u.kleine-koenig@...gutronix.de, 
	siebren.vroegindeweij@...mail.com, linux-input@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] Input: ektf2127 - add ektf2232 support

On Fri, May 3, 2024 at 2:10 AM Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Thu, May 02, 2024 at 10:16:01PM +0300, Andy Shevchenko wrote:
> > On Thu, May 2, 2024 at 9:58 PM Andreas Kemnade <andreas@...nadeinfo> wrote:

..

> > > +       if (ts->shifted_status) {
>
> Instead of the flag I think it would be better if you had
> ts->status_shift and did
>
>                 status = buf[7] >> ts->status_shift;
>                 ektf2127_report2_contact(ts, 0, &buf[1], status & BIT(0));
>                 ektf2127_report2_contact(ts, 1, &buf[4], status & BIT(1));
>
> > > +               ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & 1));
> > > +               ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & 2));
> >
> > BIT(0)
> > BIT(1)
> >
> > > +       } else {
> > > +               ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & 2));
> > > +               ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & 4));
> >
> > BIT(1)
> > BIT(2)
> >
> > > +       }

..

> > > +       if (dev->of_node &&
> > > +           of_device_is_compatible(dev->of_node, "elan,ektf2232"))
> >
> > if (device_is_compatible(...))
>
> Actually I think this better come from data obtained via
> device_get_match_data().
>
> > > +               ts->shifted_status = true;

I agree with your comments. Hopefully the author as well.

-- 
With Best Regards,
Andy Shevchenko