linux-kernel - Re: [PATCH] clk: imx: clk-imxrt1050: fix memory leak in imxrt1050_clocks

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Date:   Mon, 29 May 2023 12:55:07 +0800
From:   Kai Ma <kaima@...t.edu.cn>
To:     Stephen Boyd <sboyd@...nel.org>, NXP Linux Team <linux-imx@....com>
Cc:     Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Jesse Taube <mr.bossman075@...il.com>,
        hust-os-kernel-patches@...glegroups.com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Abel Vesa <abel.vesa@...aro.org>
Subject: Re: [PATCH] clk: imx: clk-imxrt1050: fix memory leak in
 imxrt1050_clocks_probe

On Thursday, May 18, 2023 6:34:38 PM CST Abel Vesa wrote:
> On 23-04-18 11:34:51, Kai Ma wrote:
> > Use devm_of_iomap() instead of of_iomap() to automatically
> > handle the unused ioremap region. If any error occurs, regions allocated by
> > kzalloc() will leak, but using devm_kzalloc() instead will automatically
> > free the memory using devm_kfree().
> > 
> > Also, fix error handling of hws by adding unregister_hws label, which
> > unregisters remaining hws when iomap failed.
> > 
> > Fixes: 7154b046d8f3 ("clk: imx: Add initial support for i.MXRT1050 clock driver")
> > Signed-off-by: Kai Ma <kaima@...t.edu.cn>
> 
> Reviewed-by: Abel Vesa <abel.vesa@...aro.org>
> 
> Stephen, can you apply this through clk-fixes?
> 

Thanks for your review, I am glad to let you know that I am a student at a
university and we collaborate to contribute to the Linux kernel. Here we
have some similar patches for clk. Could you please take care of them?

[1] https://lore.kernel.org/linux-arm-kernel/DU0PR04MB9417B63DE97D4A2A77B4176C88969@DU0PR04MB9417.eurprd04.prod.outlook.com/T/
[2] https://lore.kernel.org/linux-arm-kernel/20230503070607.2462-1-lyx2022@hust.edu.cn/T/
[3] https://lore.kernel.org/linux-arm-kernel/dc0f2863-d5d5-5102-eb8e-ceea92c03fda@oss.nxp.com/
[4] https://lore.kernel.org/linux-arm-kernel/9a2ab7ec-07ee-255f-a143-9b6c8df7c1e2@gmail.com/

Thank you very much!

Regards,
Kai Ma

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