ath9k: Fix address management

Since both the arguments need to satisfy
the alignment requirements of ether_addr_copy(),
use memcpy() in cases where there will be no
big performance benefit and make sure that
ether_addr_copy() calls use properly aligned
arguments.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 0545fe6..c291d54 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1057,7 +1057,7 @@
 
 	eth_zero_addr(common->curbssid);
 	eth_broadcast_addr(common->bssidmask);
-	ether_addr_copy(common->macaddr, vif->addr);
+	memcpy(common->macaddr, vif->addr, ETH_ALEN);
 	common->curaid = 0;
 	ah->opmode = vif->type;
 	ah->imask &= ~ATH9K_INT_SWBA;
@@ -1098,7 +1098,7 @@
 	ath9k_calculate_iter_data(sc, ctx, &iter_data);
 
 	if (iter_data.has_hw_macaddr)
-		ether_addr_copy(common->macaddr, iter_data.hw_macaddr);
+		memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN);
 
 	memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
 	ath_hw_setbssidmask(common);
@@ -1785,7 +1785,7 @@
 		ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n",
 			bss_conf->bssid, bss_conf->assoc);
 
-		ether_addr_copy(avp->bssid, bss_conf->bssid);
+		memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
 		avp->aid = bss_conf->aid;
 		avp->assoc = bss_conf->assoc;