linux-kernel - Re: [iio:togreg 3/3] WARNING: Reusing the krealloc arg is almost always a bug

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Date:	Sun, 02 Mar 2014 10:11:24 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Fengguang Wu <fengguang.wu@...el.com>
CC:	Jonathan Cameron <jic23@...nel.org>, Joe Perches <joe@...ches.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [iio:togreg 3/3] WARNING: Reusing the krealloc arg is almost
 always a bug

On 03/02/2014 03:24 AM, Fengguang Wu wrote:
>
> Hi Lars-Peter,
>
> FYI, there are new warnings show up in
>
> tree:   git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> head:   bdc8cda1d010887c06bd8c29564b74cd61ec0a7b
> commit: bdc8cda1d010887c06bd8c29564b74cd61ec0a7b [3/3] iio:adc: Add Xilinx XADC driver
>
> scripts/checkpatch.pl 0001-iio-adc-Add-Xilinx-XADC-driver.patch
> # many are suggestions rather than must-fix
> WARNING: Reusing the krealloc arg is almost always a bug
> #1220: drivers/iio/adc/xilinx-xadc-core.c:1138:
> +	indio_dev->channels = krealloc(channels, sizeof(*channels) *
>

This is actually a false positive, checkpatch thinks that 
'indio_dev->channels' and 'channels' is the same. Added Joe to Cc.

- Lars
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