linux-kernel - Re: [PATCH v3 14/20] iio: adc: xilinx-xadc-core: use devm_kmemdup

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Message-ID: <Z6CnY7sAIP5M8NWe@smile.fi.intel.com>
Date: Mon, 3 Feb 2025 13:24:19 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Raag Jadav <raag.jadav@...el.com>
Cc: gregkh@...uxfoundation.org, rafael@...nel.org, linus.walleij@...aro.org,
	mika.westerberg@...ux.intel.com, dmitry.torokhov@...il.com,
	lgirdwood@...il.com, broonie@...nel.org, sre@...nel.org,
	jic23@...nel.org, przemyslaw.kitszel@...el.com,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org, linux-sound@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH v3 14/20] iio: adc: xilinx-xadc-core: use
 devm_kmemdup_array()

On Mon, Feb 03, 2025 at 12:42:36PM +0200, Raag Jadav wrote:
> On Mon, Feb 03, 2025 at 11:54:42AM +0200, Andy Shevchenko wrote:
> > On Mon, Feb 03, 2025 at 01:38:56PM +0530, Raag Jadav wrote:
> > > Convert to use devm_kmemdup_array() which is more robust.
> > 
> > ...
> > 
> > > -	channels = devm_kmemdup(dev, channel_templates,
> > > -				sizeof(channels[0]) * max_channels, GFP_KERNEL);
> > > +	channels = devm_kmemdup_array(dev, channel_templates, max_channels,
> > > +				      sizeof(channels[0]), GFP_KERNEL);
> > 
> > I would use more regular sizeof(*channels)
> 
> This might get confusing since we're assigning it back to channels.

Then it should be sizeof(*channel_templates) ?

Now since you mention this, in all other suggested cases it may need to be
carefully chosen.

-- 
With Best Regards,
Andy Shevchenko