From: Johan Hovold <johan@kernel.org>
Date: Thu, 17 Nov 2016 16:40:03 +0000 (+0100)
Subject: net: ethernet: ti: cpsw: add missing sanity check
X-Git-Tag: v4.9-rc7~33^2~12^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3420ea88509f9d585b39f36e737022faf0286d9a;p=platform%2Fkernel%2Flinux-exynos.git

net: ethernet: ti: cpsw: add missing sanity check

Make sure to check for allocation failures before dereferencing a
NULL-pointer during probe.

Fixes: 649a1688c960 ("net: ethernet: ti: cpsw: create common struct to
hold shared driver data")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 11b2dae..1387299 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2588,6 +2588,9 @@ static int cpsw_probe(struct platform_device *pdev)
 	int irq;
 
 	cpsw = devm_kzalloc(&pdev->dev, sizeof(struct cpsw_common), GFP_KERNEL);
+	if (!cpsw)
+		return -ENOMEM;
+
 	cpsw->dev = &pdev->dev;
 
 	ndev = alloc_etherdev_mq(sizeof(struct cpsw_priv), CPSW_MAX_QUEUES);