From: Peng Fan <peng.fan@oss.nxp.com>
To: Frank Li <Frank.li@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Dong Aisheng <aisheng.dong@nxp.com>,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/8] firmware: imx: scu-irq: Free mailbox client on failure
Date: Wed, 15 Oct 2025 21:55:03 +0800 [thread overview]
Message-ID: <20251015135503.GA31091@nxa18884-linux.ap.freescale.net> (raw)
In-Reply-To: <aO5yPLL9HKdM6yuB@lizhi-Precision-Tower-5810>
On Tue, Oct 14, 2025 at 11:54:36AM -0400, Frank Li wrote:
>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@nxp.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.
Actually in imx-scu.c, there is only a warning message if this API call returns
error. So need to free here.
Thanks
Peng
>
>Frank
>>
>> return ret;
>> }
>>
>> --
>> 2.37.1
>>
next prev parent reply other threads:[~2025-10-15 12:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-14 4:54 [PATCH 0/8] firmware: imx: scu: Misc update Peng Fan
2025-10-14 4:54 ` [PATCH 1/8] firmware: imx: scu-irq: fix OF node leak in Peng Fan
2025-10-14 15:48 ` Frank Li
2025-10-14 4:54 ` [PATCH 2/8] firmware: imx: scu-irq: Free mailbox client on failure Peng Fan
2025-10-14 15:54 ` Frank Li
2025-10-15 13:55 ` Peng Fan [this message]
2025-10-15 14:32 ` Frank Li
2025-10-16 2:14 ` Peng Fan
2025-10-16 15:33 ` Frank Li
2025-10-14 4:54 ` [PATCH 3/8] firmware: imx: scu-irq: Init workqueue before request mbox channel Peng Fan
2025-10-14 15:55 ` Frank Li
2025-10-14 4:54 ` [PATCH 4/8] firmware: imx: scu-irq: Set mu_resource_id before get handle Peng Fan
2025-10-14 15:57 ` Frank Li
2025-10-14 4:54 ` [PATCH 5/8] firmware: imx: scu-irq: Remove unused export of imx_scu_enable_general_irq_channel Peng Fan
2025-10-14 15:59 ` Frank Li
2025-10-14 4:54 ` [PATCH 6/8] firmware: imx: scu: Update error code Peng Fan
2025-10-14 16:00 ` Frank Li
2025-10-14 4:54 ` [PATCH 7/8] firmware: imx: scu: Suppress bind attrs Peng Fan
2025-10-14 16:01 ` Frank Li
2025-10-14 4:54 ` [PATCH 8/8] firmware: imx: scu: Use devm_mutex_init Peng Fan
2025-10-14 16:02 ` Frank Li
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