From c6090480b27ac7148bf4087f2112ed9c05f34c2b Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Fri, 7 Jul 2017 01:33:33 -0500 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- drivers/crypto/bcm/cipher.c | 5 +++++ 1 file changed, 5 insertions(+) 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) {