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
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 |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -844,6 +844,9 @@ static int s5p_aes_probe(struct platform
 		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -EINVAL;
+
 	pdata->ioaddr = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(pdata->ioaddr))
 		return PTR_ERR(pdata->ioaddr);