linux-kernel - [PATCH 5.4 017/355] crypto: s5p-sss - Add error handling in s5p_aes

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Message-Id: <20211115165314.108686647@linuxfoundation.org>
Date:   Mon, 15 Nov 2021 17:59:01 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Tang Bin <tangbin@...s.chinamobile.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 5.4 017/355] crypto: s5p-sss - Add error handling in s5p_aes_probe()

From: Tang Bin <tangbin@...s.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@...r.kernel.org>
Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/crypto/s5p-sss.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -2208,6 +2208,8 @@ 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