linux-kernel - Re: [PATCH 1/2] ASoC: fsl_mqs: move of_node

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Date:   Mon, 3 Apr 2023 18:36:36 +0300
From:   Dan Carpenter <error27@...il.com>
To:     Liliang Ye <yll@...t.edu.cn>
Cc:     Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        hust-os-kernel-patches@...glegroups.com,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ASoC: fsl_mqs: move of_node_put() to the correct
 location

On Mon, Apr 03, 2023 at 11:26:47PM +0800, Liliang Ye wrote:
> of_node_put() should have been done directly after
> mqs_priv->regmap = syscon_node_to_regmap(gpr_np);
> otherwise it creates a reference leak on the success path.
> 
> To fix this, of_node_put() is moved to the correct location, and change
> all the gotos to direct returns.
> 
> Fixes: a9d273671440 ("ASoC: fsl_mqs: Fix error handling in probe")
> Signed-off-by: Liliang Ye <yll@...t.edu.cn>
> Reviewed-by: Dan Carpenter <error27@...il.com>
> ---

These patches are from a university.  I think this patch was based on
manual review rather than static analysis.  They have not been tested
and this one affects the success path so that's always extra risky.

However I do believe the patch is correct and reviewed it before it was
sent publically.

regards,
dan carpenter