linux-kernel - Re: [PATCH v1 2/8] media: ov2740: Replace voodoo coding with understandle flow

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Date:   Fri, 11 Nov 2022 17:30:09 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Sakari Ailus <sakari.ailus@....fi>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Shawn Tu <shawnx.tu@...el.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Subject: Re: [PATCH v1 2/8] media: ov2740: Replace voodoo coding with
 understandle flow

On Fri, Nov 11, 2022 at 05:02:22PM +0200, Sakari Ailus wrote:
> Hi Andy,
> 
> On Tue, Jul 26, 2022 at 03:05:50PM +0300, Andy Shevchenko wrote:
> > Besides not being understandable at the first glance, the code
> > might provoke a compiler or a static analyser tool to warn about
> > out-of-bound access (when len == 0).
> 
> I've never seen one.
> 
> However the same pattern is repeatedly used by many, many drivers and
> addressing just one doesn't make much sense.
> 
> The proper way to fix this would be to have a set of common CCI (Camera
> Control Interface) functions that all drivers could use, and then switch
> the drivers to use them.
> 
> This isn't currently a great fit for e.g. regmap but perhaps something
> light on top of regmap-i2c could do the trick?

So, then we can skip this one, right?

> The rest of the set seems good to me.

Thank you for the review, can you apply them, or should I send a v2 with
dropped first patch?

-- 
With Best Regards,
Andy Shevchenko