linux-kernel - Re: [PATCH 2/8] firmware: imx: scu-irq: Free mailbox client on failure

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Message-ID: <aO5yPLL9HKdM6yuB@lizhi-Precision-Tower-5810>
Date: Tue, 14 Oct 2025 11:54:36 -0400
From: Frank Li <Frank.li@....com>
To: Peng Fan <peng.fan@....com>
Cc: Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Dong Aisheng <aisheng.dong@....com>, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/8] firmware: imx: scu-irq: Free mailbox client on
 failure

On Tue, Oct 14, 2025 at 12:54:39PM +0800, Peng Fan wrote:
> With mailbox channel freed, it is pointless to keep mailbox client.
> So free the mailbox client in err path.
>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/firmware/imx/imx-scu-irq.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c
> index f2b902e95b738fae90af9cbe54da4f488219906f..1fbe4c3de5c1592bfcf2334a83776c25d5ca7a3f 100644
> --- a/drivers/firmware/imx/imx-scu-irq.c
> +++ b/drivers/firmware/imx/imx-scu-irq.c
> @@ -255,6 +255,7 @@ int imx_scu_enable_general_irq_channel(struct device *dev)
>
>  free_ch:
>  	mbox_free_channel(ch);
> +	devm_kfree(dev, cl);


you use devm_kmalloc(), when return failure, framework will auto free cl.

Avoid mixing manual free and management free code.

So I think this patch is not neccesary.

Frank
>
>  	return ret;
>  }
>
> --
> 2.37.1
>