[PATCH 4.4 15/38] gianfar: Handle error code at MAC address change

[Greg Kroah-Hartman]

From: Claudiu Manoil <claudiu.man...@nxp.com>

[ 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.man...@nxp.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 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 bc00fa5e864f..fb135797688a 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