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

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Message-ID: <20250203111458.00002a5d@huawei.com>
Date: Mon, 3 Feb 2025 11:14:58 +0000
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Raag Jadav <raag.jadav@...el.com>
CC: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	<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, 3 Feb 2025 12:42:36 +0200
Raag Jadav <raag.jadav@...el.com> 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.
> 
It looks like standard pattern.  Assign X * the thing to the thing.

So I'd prefer sizeof(*channels) here as well.

> Raag
> 
>