crypto: s5p-sss - Add error handling in s5p_aes_probe()

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>

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index b7216935236f03fc1892f9ec3e4b8bff7a48f07e..078f904b68cdaed4c2094fea190a1d1c5cca41b0 100644 (file)
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -2166,6 +2166,8 @@ 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