[PATCH 4.9 19/47] gianfar: Handle error code at MAC address change

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From: Claudiu Manoil <claudiu.manoil@xxxxxxx>

[ Upstream commit bff5b62585123823842833ab20b1c0a7fa437f8c ]

Handle return error code of eth_mac_addr();

Fixes: 3d23a05c75c7 ("gianfar: Enable changing mac addr when if up")
Signed-off-by: Claudiu Manoil <claudiu.manoil@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/freescale/gianfar.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 2df646348dbd..9fd68cfdd973 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -485,7 +485,11 @@ static struct net_device_stats *gfar_get_stats(struct net_device *dev)
 
 static int gfar_set_mac_addr(struct net_device *dev, void *p)
 {
-	eth_mac_addr(dev, p);
+	int ret;
+
+	ret = eth_mac_addr(dev, p);
+	if (ret)
+		return ret;
 
 	gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
 
-- 
2.30.2






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