From: Tang Bin <tangbin@cmss.chinamobile.com>
Date: Thu, 21 Oct 2021 01:34:22 +0000 (+0800)
Subject: crypto: s5p-sss - Add error handling in s5p_aes_probe()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a472cc0dde3eb057db71c80f102556eeced03805;p=linux.git

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

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>
---

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index 55aa3a71169b0..7717e9e5977bb 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