From a472cc0dde3eb057db71c80f102556eeced03805 Mon Sep 17 00:00:00 2001
From: Tang Bin <tangbin@cmss.chinamobile.com>
Date: Thu, 21 Oct 2021 09:34:22 +0800
Subject: [PATCH] crypto: s5p-sss - Add error handling in s5p_aes_probe()
Git-commit: a472cc0dde3eb057db71c80f102556eeced03805
References: git-fixes stable-5.14.19
Patch-mainline: v5.16-rc1
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: Oliver Neukum <oneukum@suse.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 55aa3a71169b..7717e9e5977b 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
--
2.26.2