cw1200: slight optimization of addr compare

Use possibly more efficient ether_addr_equal
instead of memcmp.

Cc: Solomon Peachy <pizza@shaftnet.org>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/cw1200/sta.c

@@ -13,6 +13,7 @@
 #include <linux/sched.h>
 #include <linux/firmware.h>
 #include <linux/module.h>
+#include <linux/etherdevice.h>
 
 #include "cw1200.h"
 #include "sta.h"
@@ -555,8 +556,8 @@ u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
 		pr_debug("[STA] multicast: %pM\n", ha->addr);
 		memcpy(&priv->multicast_filter.macaddrs[count],
 		       ha->addr, ETH_ALEN);
-		if (memcmp(ha->addr, broadcast_ipv4, ETH_ALEN) &&
-		    memcmp(ha->addr, broadcast_ipv6, ETH_ALEN))
+		if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
+		    !ether_addr_equal(ha->addr, broadcast_ipv6))
 			priv->has_multicast_subscription = true;
 		count++;
 	}

drivers/net/wireless/cw1200/txrx.c

@@ -1166,8 +1166,7 @@ void cw1200_rx_cb(struct cw1200_common *priv,
 			return;
 	} else if (ieee80211_is_beacon(frame->frame_control) &&
 		   !arg->status && priv->vif &&
-		   !memcmp(ieee80211_get_SA(frame), priv->vif->bss_conf.bssid,
-			   ETH_ALEN)) {
+		   ether_addr_equal(ieee80211_get_SA(frame), priv->vif->bss_conf.bssid)) {
 		const u8 *tim_ie;
 		u8 *ies = ((struct ieee80211_mgmt *)
 			  (skb->data))->u.beacon.variable;