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Date: Tue, 28 Feb 2017 13:41:51 -0500 From: Jon Mason <jon.mason@...adcom.com> To: David Miller <davem@...emloft.net> Cc: rafal@...ecki.pl, bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Hari Vyas <hariv@...adcom.com> Subject: [PATCH net v4 2/2] net: ethernet: bgmac: mac address change bug From: Hari Vyas <hariv@...adcom.com> 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@...adcom.com> Signed-off-by: Jon Mason <jon.mason@...adcom.com> Fixes: 4e209001b86 ("bgmac: write mac address to hardware in ndo_set_mac_address") --- 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 4150467..6b7782f 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(bgmac->mac_addr, sa->sa_data); + bgmac_write_mac_address(bgmac, bgmac->mac_addr); + eth_commit_mac_addr_change(net_dev, addr); return 0; } -- 2.7.4
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