linux-kernel - Re: [PATCH -next] ASoC: Intel: sst_byt: remove kfree for memory allocated with devm

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Message-ID: <552FC1AD.7030207@linux.intel.com>
Date:	Thu, 16 Apr 2015 17:05:33 +0300
From:	Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To:	weiyj_lk@....com, Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Jin Yao <yao.jin@...ux.intel.com>,
	Jie Yang <yang.jie@...el.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] ASoC: Intel: sst_byt: remove kfree for memory allocated
 with devm_kzalloc

Hi

On 04/16/2015 04:46 PM, weiyj_lk@....com wrote:
> From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
>
> It's not necessary to free memory allocated with devm_kzalloc
> and using kfree leads to a double free.
>
> Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> ---
>   sound/soc/intel/baytrail/sst-baytrail-ipc.c | 1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/sound/soc/intel/baytrail/sst-baytrail-ipc.c b/sound/soc/intel/baytrail/sst-baytrail-ipc.c
> index 1efb33b..a839dbf 100644
> --- a/sound/soc/intel/baytrail/sst-baytrail-ipc.c
> +++ b/sound/soc/intel/baytrail/sst-baytrail-ipc.c
> @@ -759,7 +759,6 @@ fw_err:
>   dsp_new_err:
>   	sst_ipc_fini(ipc);
>   ipc_init_err:
> -	kfree(byt);
>
>   	return err;
>   }
>
Above kfree(byt) appears to be added by accident in the commit 
48cec59b6f38 ("ASoC: Intel: Use the generic IPC/mailbox APIs in Baytrail").

Acked-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
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