ar71xx: ag71xx: avoid unalinged accesses when using the phy specific receive functions

Cc: backfire@openwrt.org

SVN-Revision: 20751

target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h

@@ -38,7 +38,7 @@
 #define ETH_FCS_LEN	4
 
 #define AG71XX_DRV_NAME		"ag71xx"
-#define AG71XX_DRV_VERSION	"0.5.34"
+#define AG71XX_DRV_VERSION	"0.5.35"
 
 #define AG71XX_NAPI_WEIGHT	64
 #define AG71XX_OOM_REFILL	(1 + HZ/10)

target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c

@@ -764,6 +764,9 @@ static int ag71xx_rx_copy_skb(struct ag71xx *ag, struct sk_buff **pskb,
 {
 	struct sk_buff *copy_skb;
 
+	if (ag->phy_dev && (ag->phy_dev->pkt_align % 4) == 2)
+		goto keep;
+
 	copy_skb = netdev_alloc_skb(ag->dev, pktlen + NET_IP_ALIGN);
 	if (!copy_skb)
 		return -ENOMEM;
@@ -776,6 +779,10 @@ static int ag71xx_rx_copy_skb(struct ag71xx *ag, struct sk_buff **pskb,
 	*pskb = copy_skb;
 
 	return 0;
+
+ keep:
+	skb_put(*pskb, pktlen);
+	return 0;
 }
 
 static int ag71xx_rx_packets(struct ag71xx *ag, int limit)