701-net-0399-staging-fsl_ppfe-eth-Enhance-error-checking-in-platf.patch

From 1ccc18ca96d8a824f2af45d1046d23ccdb90f3df Mon Sep 17 00:00:00 2001
From: Anji Jagarlmudi <anji.jagarlmudi@nxp.com>
Date: Wed, 8 Jan 2020 12:18:40 +0530
Subject: [PATCH] staging: fsl_ppfe/eth: Enhance error checking in platform
 probe

Fix the kernel crash when MAC addr is not passed in dtb.

Signed-off-by: Anji Jagarlmudi <anji.jagarlmudi@nxp.com>
---
 drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

--- a/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
+++ b/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
@@ -31,7 +31,11 @@ static int pfe_get_gemac_if_properties(s
 	const u32 *addr;
 
 	addr = of_get_property(gem, "reg", &size);
-	port = be32_to_cpup(addr);
+	if (addr)
+		port = be32_to_cpup(addr);
+	else
+		goto err;
+
 
 	pdata->ls1012a_eth_pdata[port].gem_id = port;