linux-kernel - Re: [PATCH] crypto: s5p-sss - Add error handling in s5p_aes

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Date:   Wed, 20 Oct 2021 12:09:49 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Tang Bin <tangbin@...s.chinamobile.com>, vz@...ia.com,
        herbert@...dor.apana.org.au, davem@...emloft.net
Cc:     linux-crypto@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: s5p-sss - Add error handling in s5p_aes_probe()

On 20/10/2021 12:03, Tang Bin wrote:
> The function s5p_aes_probe() does not perform sufficient error
> checking after executing platform_get_resource(), thus fix it.
> 
> Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
> ---
>  drivers/crypto/s5p-sss.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
> index 55aa3a711..7717e9e59 100644
> --- a/drivers/crypto/s5p-sss.c
> +++ b/drivers/crypto/s5p-sss.c
> @@ -2171,6 +2171,8 @@ static int s5p_aes_probe(struct platform_device *pdev)
>  
>  	variant = find_s5p_sss_version(pdev);
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	if (!res)
> +		return -EINVAL;
>  
>  	/*
>  	 * Note: HASH and PRNG uses the same registers in secss, avoid
> 

You need fixes and cc-stable:
Fixes: c2afad6c6105 ("crypto: s5p-sss - Add HASH support for Exynos")
Cc: <stable@...r.kernel.org>

With above added:
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>

Best regards,
Krzysztof