From fa42245dff4a5f2f8f208da542acbd80c22f7c65 Mon Sep 17 00:00:00 2001
From: Hari Vyas <hariv@broadcom.com>
Date: Thu, 2 Mar 2017 17:59:57 -0500
Subject: [PATCH] net: ethernet: bgmac: mac address change bug
ndo_set_mac_address() passes struct sockaddr * as 2nd parameter to
bgmac_set_mac_address() but code assumed u8 *. This caused two bytes
chopping and the wrong mac address was configured.
Signed-off-by: Hari Vyas <hariv@broadcom.com>
Signed-off-by: Jon Mason <jon.mason@broadcom.com>
Fixes: 4e209001b86 ("bgmac: write mac address to hardware in ndo_set_mac_address")
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 415046750bb44..fd66fca00e017 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1223,12 +1223,16 @@ static netdev_tx_t bgmac_start_xmit(struct sk_buff *skb,
static int bgmac_set_mac_address(struct net_device *net_dev, void *addr)
{
struct bgmac *bgmac = netdev_priv(net_dev);
+ struct sockaddr *sa = addr;
int ret;
ret = eth_prepare_mac_addr_change(net_dev, addr);
if (ret < 0)
return ret;
- bgmac_write_mac_address(bgmac, (u8 *)addr);
+
+ ether_addr_copy(net_dev->dev_addr, sa->sa_data);
+ bgmac_write_mac_address(bgmac, net_dev->dev_addr);
+
eth_commit_mac_addr_change(net_dev, addr);
return 0;
}
--
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