linux-kernel - Re: [PATCH -next] viper_tpm_init(): fix memleak on registration failure

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Message-ID: <ac2613a8-af99-0a87-c80f-f5e7af934198@huawei.com>
Date:   Mon, 26 Sep 2022 17:14:51 +0800
From:   "linyujun (C)" <linyujun809@...wei.com>
To:     <daniel@...que.org>, <haojian.zhuang@...il.com>,
        <robert.jarzmik@...e.fr>, <linux@...linux.org.uk>,
        <marc.zyngier@...ran.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] viper_tpm_init(): fix memleak on registration
 failure

kindly ping

在 2022/9/14 11:16, Lin Yujun 写道:
> In case device registration fails, the platform device
> structure needs to be free. Use platform_device_put()
> to free all resources instead of using kfree to release
> the platform device.
>
> Fixes: 352699a3d7cc ("Basic support for the Arcom/Eurotech Viper SBC.")
> Signed-off-by: Lin Yujun <linyujun809@...wei.com>
> ---
>   arch/arm/mach-pxa/viper.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
> index 5b43351ee840..44b2c54fb2c7 100644
> --- a/arch/arm/mach-pxa/viper.c
> +++ b/arch/arm/mach-pxa/viper.c
> @@ -829,7 +829,7 @@ static void __init viper_tpm_init(void)
>   	return;
>   
>   error_free_tpm:
> -	kfree(tpm_device);
> +	platform_device_put(tpm_device);
>   error_tpm:
>   	pr_err("viper: Couldn't %s, giving up\n", errstr);
>   }