linux-kernel - Re: [PATCH v2 1/2] soc: imx: gpcv2: Do not pass static memory as platform data

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Date:   Thu, 8 Feb 2018 14:47:10 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     Stefan Agner <stefan@...er.ch>,
        Lucas Stach <l.stach@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] soc: imx: gpcv2: Do not pass static memory as
 platform data

On Mon, Jan 22, 2018 at 07:07:47AM -0800, Andrey Smirnov wrote:
> Platform device core assumes the ownership of dev.platform_data as
> well as that it is dynamically allocated and it will try to kfree it
> as a part of platform_device_release(). Change the code to pass
> kzalloc'ed chunk of memory instead of a pointer to a static memory to
> avoid causing a BUG() when calling platform_device_put().
> 
> The problem can be reproduced by artificially enabling the error path
> of platform_device_add() call (around line 357).
> 
> Note that this change also allows us to constify imx7_pgc_domains,
> since we no longer need to be able to modify it.
> 
> Cc: Shawn Guo <shawnguo@...nel.org>
> Cc: Stefan Agner <stefan@...er.ch>
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>

Applied both, thanks.