From: Gustavo A. R. Silva <garsilva@embeddedor.com>
Date: Fri, 7 Jul 2017 06:33:33 +0000 (-0500)
Subject: crypto: brcm - add NULL check on of_match_device() return value
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c6090480b27ac7148bf4087f2112ed9c05f34c2b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

crypto: brcm - add NULL check on of_match_device() return value

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
index 9cfd36c1bcb6..f1a826f97fec 100644
--- a/drivers/crypto/bcm/cipher.c
+++ b/drivers/crypto/bcm/cipher.c
@@ -4813,6 +4813,11 @@ static int spu_dt_read(struct platform_device *pdev)
 	int err;
 
 	match = of_match_device(of_match_ptr(bcm_spu_dt_ids), dev);
+	if (!match) {
+		dev_err(&pdev->dev, "Failed to match device\n");
+		return -ENODEV;
+	}
+
 	matched_spu_type = match->data;
 
 	if (iproc_priv.spu.num_spu > 1) {