From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Mason Subject: [PATCH net v3 2/2] net: ethernet: bgmac: mac address change bug Date: Wed, 8 Feb 2017 16:12:57 -0500 Message-ID: <1486588377-7681-3-git-send-email-jon.mason@broadcom.com> References: <1486588377-7681-1-git-send-email-jon.mason@broadcom.com> Cc: rafal@milecki.pl, bcm-kernel-feedback-list@broadcom.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Hari Vyas To: David Miller Return-path: In-Reply-To: <1486588377-7681-1-git-send-email-jon.mason@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Hari Vyas 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 Signed-off-by: Jon Mason 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 fe88126..bd549f8 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1221,12 +1221,16 @@ 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