linux-kernel - Re: [PATCH 5.10 527/717] media: ipu3-cio2: Validate mbus format in setting subdev format

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Message-ID: <CAHp75VdFT-SUUj2LiPTs1_RJ-n97OiyQ2pF0jVbHsARkDshfwA@mail.gmail.com>
Date:   Wed, 30 Dec 2020 14:32:46 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Pavel Machek <pavel@...x.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stable <stable@...r.kernel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Subject: Re: [PATCH 5.10 527/717] media: ipu3-cio2: Validate mbus format in
 setting subdev format

On Wed, Dec 30, 2020 at 2:25 PM Pavel Machek <pavel@...x.de> wrote:

> > commit a86cf9b29e8b12811cf53c4970eefe0c1d290476 upstream.
> >
> > Validate media bus code, width and height when setting the subdev format.
> >
> > This effectively reworks how setting subdev format is implemented in the
> > driver.
>
> Something is wrong here:
>
> > +     fmt->format.code = formats[0].mbus_code;
> > +     for (i = 0; i < ARRAY_SIZE(formats); i++) {

Looks like 'i = 1' should be...

> > +             if (formats[i].mbus_code == fmt->format.code) {
> > +                     fmt->format.code = mbus_code;
> > +                     break;
> > +             }
>
> This does not make sense. Loop will always exit during the first
> iteration, making the whole loop crazy/redundant.



-- 
With Best Regards,
Andy Shevchenko