linux-kernel - Re: [PATCH v2 4/5] drm/solomon: Move device info from ssd130x-i2c to the core driver

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]

Message-ID: <YlVgpHqqqFy43L37@smile.fi.intel.com>
Date:   Tue, 12 Apr 2022 14:21:08 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Javier Martinez Canillas <javierm@...hat.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Rob Herring <robh@...nel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Mark Brown <broonie@...nel.org>,
        Chen-Yu Tsai <wens@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>
Subject: Re: [PATCH v2 4/5] drm/solomon: Move device info from ssd130x-i2c to
 the core driver

On Tue, Apr 12, 2022 at 10:07:02AM +0200, Javier Martinez Canillas wrote:
> On 4/12/22 09:23, Geert Uytterhoeven wrote:
> > On Mon, Apr 11, 2022 at 11:12 PM Javier Martinez Canillas
> > <javierm@...hat.com> wrote:

...

> >> -       ssd130x->device_info = device_get_match_data(dev);
> >> +
> >> +       variant = (enum ssd130x_variants)device_get_match_data(dev);
> > 
> > (uintptr_t), to avoid a cast from pointer to integer of different
> > size warning.
> >
> 
> Indeed. The kernel test robot reported the same.

Not only because of this, but also with the non-NULL pointers I prefer the old
style without ugly castings.

Instead, you may export the array (in the driver's namespace) and use
&info[ID] pointer for the specific device info.

-- 
With Best Regards,
Andy Shevchenko