2 files changed, 5 insertions, 7 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
index b0df017571..f6d85b9084 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
@@ -166,6 +166,7 @@ struct ag71xx {
 	int			duplex;
 
 	unsigned int		max_frame_len;
+	unsigned int		desc_pktlen_mask;
 	unsigned int		rx_buf_size;
 
 	struct work_struct	restart_work;
@@ -198,11 +199,6 @@ static inline int ag71xx_desc_empty(struct ag71xx_desc *desc)
 	return (desc->ctrl & DESC_EMPTY) != 0;
 }
 
-static inline int ag71xx_desc_pktlen(struct ag71xx_desc *desc)
-{
-	return desc->ctrl & DESC_PKTLEN_M;
-}
-
 /* Register offsets */
 #define AG71XX_REG_MAC_CFG1	0x0000
 #define AG71XX_REG_MAC_CFG2	0x0004
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index 622ffed1ea..a129a6f291 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -692,7 +692,7 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
 
 	/* setup descriptor fields */
 	desc->data = (u32) dma_addr;
-	desc->ctrl = (skb->len & DESC_PKTLEN_M);
+	desc->ctrl = skb->len & ag->desc_pktlen_mask;
 
 	/* flush descriptor */
 	wmb();
@@ -866,6 +866,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
 	struct net_device *dev = ag->dev;
 	struct ag71xx_ring *ring = &ag->rx_ring;
 	int offset = ag71xx_buffer_offset(ag);
+	unsigned int pktlen_mask = ag->desc_pktlen_mask;
 	int done = 0;
 
 	DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
@@ -888,7 +889,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
 
 		ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
 
-		pktlen = ag71xx_desc_pktlen(desc);
+		pktlen = desc->ctrl & pktlen_mask;
 		pktlen -= ETH_FCS_LEN;
 
 		dma_unmap_single(&dev->dev, ring->buf[i].dma_addr,
@@ -1169,6 +1170,7 @@ static int ag71xx_probe(struct platform_device *pdev)
 	ag->rx_ring.size = AG71XX_RX_RING_SIZE_DEFAULT;
 
 	ag->max_frame_len = AG71XX_TX_MTU_LEN;
+	ag->desc_pktlen_mask = DESC_PKTLEN_MASK;
 
 	ag->stop_desc = dma_alloc_coherent(NULL,
 		sizeof(struct ag71xx_desc), &ag->stop_desc_dma, GFP_KERNEL);