linux-kernel - Re: [PATCH] regulator: palmas: fix pdata ptr not be updated after it has been allocated

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Date:	Wed, 24 Jul 2013 18:02:15 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Rhyland Klein <rklein@...dia.com>
Cc:	Liam Girdwood <lgirdwood@...il.com>,
	Joseph Lo <josephl@...dia.com>, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH] regulator: palmas: fix pdata ptr not be updated after it
 has been allocated

On Wed, Jul 24, 2013 at 12:28:02PM -0400, Rhyland Klein wrote:

> +	/* Store the pdata pointer after everything else passes */
> +	pdev->dev.platform_data = pdata;

No, this is bad - the driver should not be modifying the platform_data
pointer, it's owned by the thing that created the device.  If the
platform data needs to be modified it should be copied somewhere in the
driver data.

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