1 files changed, 10 insertions, 29 deletions

diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 7410eca87823..099e0be0d8c3 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -336,7 +336,8 @@ struct tx_queue {
 	struct tx_desc *tx_desc_area;
 	dma_addr_t tx_desc_dma;
 	int tx_desc_area_size;
-	struct sk_buff **tx_skb;
+
+	struct sk_buff_head tx_skb;
 
 	unsigned long tx_packets;
 	unsigned long tx_bytes;
@@ -676,10 +677,8 @@ static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
 			desc->cmd_sts = BUFFER_OWNED_BY_DMA |
 					ZERO_PADDING | TX_LAST_DESC |
 					TX_ENABLE_INTERRUPT;
-			txq->tx_skb[tx_index] = skb;
 		} else {
 			desc->cmd_sts = BUFFER_OWNED_BY_DMA;
-			txq->tx_skb[tx_index] = NULL;
 		}
 
 		desc->l4i_chk = 0;
@@ -712,13 +711,10 @@ static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
 
 	if (nr_frags) {
 		txq_submit_frag_skb(txq, skb);
-
 		length = skb_headlen(skb);
-		txq->tx_skb[tx_index] = NULL;
 	} else {
 		cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
 		length = skb->len;
-		txq->tx_skb[tx_index] = skb;
 	}
 
 	desc->byte_cnt = length;
@@ -772,6 +768,8 @@ static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
 		desc->l4i_chk = 0;
 	}
 
+	__skb_queue_tail(&txq->tx_skb, skb);
+
 	/* ensure all other descriptors are written before first cmd_sts */
 	wmb();
 	desc->cmd_sts = cmd_sts;
@@ -884,8 +882,9 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force)
 		reclaimed++;
 		txq->tx_desc_count--;
 
-		skb = txq->tx_skb[tx_index];
-		txq->tx_skb[tx_index] = NULL;
+		skb = NULL;
+		if (cmd_sts & TX_LAST_DESC)
+			skb = __skb_dequeue(&txq->tx_skb);
 
 		if (cmd_sts & ERROR_SUMMARY) {
 			dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
@@ -1692,18 +1691,11 @@ static int txq_init(struct mv643xx_eth_private *mp, int index)
 	if (txq->tx_desc_area == NULL) {
 		dev_printk(KERN_ERR, &mp->dev->dev,
 			   "can't allocate tx ring (%d bytes)\n", size);
-		goto out;
+		return -ENOMEM;
 	}
 	memset(txq->tx_desc_area, 0, size);
 
 	txq->tx_desc_area_size = size;
-	txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
-								GFP_KERNEL);
-	if (txq->tx_skb == NULL) {
-		dev_printk(KERN_ERR, &mp->dev->dev,
-			   "can't allocate tx skb ring\n");
-		goto out_free;
-	}
 
 	tx_desc = (struct tx_desc *)txq->tx_desc_area;
 	for (i = 0; i < txq->tx_ring_size; i++) {
@@ -1719,18 +1711,9 @@ static int txq_init(struct mv643xx_eth_private *mp, int index)
 					nexti * sizeof(struct tx_desc);
 	}
 
-	return 0;
+	skb_queue_head_init(&txq->tx_skb);
 
-out_free:
-	if (index == 0 && size <= mp->tx_desc_sram_size)
-		iounmap(txq->tx_desc_area);
-	else
-		dma_free_coherent(NULL, size,
-				  txq->tx_desc_area,
-				  txq->tx_desc_dma);
-
-out:
-	return -ENOMEM;
+	return 0;
 }
 
 static void txq_deinit(struct tx_queue *txq)
@@ -1748,8 +1731,6 @@ static void txq_deinit(struct tx_queue *txq)
 	else
 		dma_free_coherent(NULL, txq->tx_desc_area_size,
 				  txq->tx_desc_area, txq->tx_desc_dma);
-
-	kfree(txq->tx_skb);
 }