ar71xx: ag71xx: use dma_unmap_single to unmap frames

SVN-Revision: 20001

2 files changed, 14 insertions, 5 deletions

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index 74593ddcc4..5e3573b335 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/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	"0.5.29"
+#define AG71XX_DRV_VERSION	"0.5.30"
 
 #define AG71XX_NAPI_WEIGHT	64
 #define AG71XX_OOM_REFILL	(1 + HZ/10)
@@ -88,8 +88,10 @@ struct ag71xx_desc {
 } __attribute__((aligned(4)));
 
 struct ag71xx_buf {
-	struct sk_buff	*skb;
-	struct ag71xx_desc *desc;
+	struct sk_buff		*skb;
+	struct ag71xx_desc 	*desc;
+	dma_addr_t		dma_addr;
+	u32			pad;
 };
 
 struct ag71xx_ring {
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index a3edd43aaf..cb4ccf06b6 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -185,9 +185,11 @@ static void ag71xx_ring_rx_clean(struct ag71xx *ag)
 		return;
 
 	for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
-		if (ring->buf[i].skb)
+		if (ring->buf[i].skb) {
+			dma_unmap_single(&ag->dev->dev, ring->buf[i].dma_addr,
+					 AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
 			kfree_skb(ring->buf[i].skb);
-
+		}
 }
 
 static int ag71xx_ring_rx_init(struct ag71xx *ag)
@@ -223,6 +225,7 @@ static int ag71xx_ring_rx_init(struct ag71xx *ag)
 					  AG71XX_RX_PKT_SIZE,
 					  DMA_FROM_DEVICE);
 		ring->buf[i].skb = skb;
+		ring->buf[i].dma_addr = dma_addr;
 		ring->buf[i].desc->data = (u32) dma_addr;
 		ring->buf[i].desc->ctrl = DESC_EMPTY;
 	}
@@ -264,6 +267,7 @@ static int ag71xx_ring_rx_refill(struct ag71xx *ag)
 						  DMA_FROM_DEVICE);
 
 			ring->buf[i].skb = skb;
+			ring->buf[i].dma_addr = dma_addr;
 			ring->buf[i].desc->data = (u32) dma_addr;
 		}
 
@@ -684,6 +688,9 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
 		pktlen = ag71xx_desc_pktlen(desc);
 		pktlen -= ETH_FCS_LEN;
 
+		dma_unmap_single(&dev->dev, ring->buf[i].dma_addr,
+				 AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
+
 		skb_put(skb, pktlen);
 
 		skb->dev = dev;