linux-kernel - RE: [PATCH] remoteproc: imx_rproc: Fix a resource leak in the remove function

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Message-ID: <DU0PR04MB94173DCAA87A0B24E1C7073388939@DU0PR04MB9417.eurprd04.prod.outlook.com>
Date:   Wed, 10 Nov 2021 08:54:07 +0000
From:   Peng Fan <peng.fan@....com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        "ohad@...ery.com" <ohad@...ery.com>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "mathieu.poirier@...aro.org" <mathieu.poirier@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        Hongxing Zhu <hongxing.zhu@....com>
CC:     "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH] remoteproc: imx_rproc: Fix a resource leak in the remove
 function

> Subject: [PATCH] remoteproc: imx_rproc: Fix a resource leak in the remove
> function
> 
> 'priv->workqueue' is destroyed in the error handling path of the probe but not
> in the remove function.
> 
> Add the missing call to release some resources.
> 
> Fixes: 2df7062002d0 ("remoteproc: imx_proc: enable virtio/mailbox")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-and-Tested-by: Peng Fan <peng.fan@....com>

> ---
> This patch is speculative. I'm not sure if the added function call is at the right
> place in the remove function.
> Review with care.
> ---
>  drivers/remoteproc/imx_rproc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/remoteproc/imx_rproc.c
> b/drivers/remoteproc/imx_rproc.c index ff8170dbbc3c..0a45bc0d3f73
> 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -804,6 +804,7 @@ static int imx_rproc_remove(struct platform_device
> *pdev)
>  	clk_disable_unprepare(priv->clk);
>  	rproc_del(rproc);
>  	imx_rproc_free_mbox(rproc);
> +	destroy_workqueue(priv->workqueue);
>  	rproc_free(rproc);
> 
>  	return 0;
> --
> 2.30.2