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    Subject[PATCH 4.19 012/323] crypto: s5p-sss - Add error handling in s5p_aes_probe()
    Date
    From: Tang Bin <tangbin@cmss.chinamobile.com>

    commit a472cc0dde3eb057db71c80f102556eeced03805 upstream.

    The function s5p_aes_probe() does not perform sufficient error
    checking after executing platform_get_resource(), thus fix it.

    Fixes: c2afad6c6105 ("crypto: s5p-sss - Add HASH support for Exynos")
    Cc: <stable@vger.kernel.org>
    Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
    Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/crypto/s5p-sss.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/crypto/s5p-sss.c
    +++ b/drivers/crypto/s5p-sss.c
    @@ -2166,6 +2166,8 @@ static int s5p_aes_probe(struct platform

    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

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