3 files changed, 20 insertions, 8 deletions

diff --git a/drivers/net/ethernet/ti/cpmac.c b/drivers/net/ethernet/ti/cpmac.c
index aaac0c7ad111..cbc8df78d84b 100644
--- a/drivers/net/ethernet/ti/cpmac.c
+++ b/drivers/net/ethernet/ti/cpmac.c
@@ -1122,7 +1122,7 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
 	pdata = pdev->dev.platform_data;
 
 	if (external_switch || dumb_switch) {
-		strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
+		strncpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE); /* fixed phys bus */
 		phy_id = pdev->id;
 	} else {
 		for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
@@ -1138,7 +1138,7 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
 	if (phy_id == PHY_MAX_ADDR) {
 		dev_err(&pdev->dev, "no PHY present, falling back "
 					"to switch on MDIO bus 0\n");
-		strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
+		strncpy(mdio_bus_id, "fixed-0", MII_BUS_ID_SIZE); /* fixed phys bus */
 		phy_id = pdev->id;
 	}
 
@@ -1269,7 +1269,7 @@ int __devinit cpmac_init(void)
 	}
 
 	cpmac_mii->phy_mask = ~(mask | 0x80000000);
-	snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "1");
+	snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "cpmac-1");
 
 	res = mdiobus_register(cpmac_mii);
 	if (res)
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 815c7970261b..4b2f54565f64 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -115,6 +115,7 @@ static const char emac_version_string[] = "TI DaVinci EMAC Linux v6.1";
 #define EMAC_DEF_TX_CH			(0) /* Default 0th channel */
 #define EMAC_DEF_RX_CH			(0) /* Default 0th channel */
 #define EMAC_DEF_RX_NUM_DESC		(128)
+#define EMAC_DEF_TX_NUM_DESC		(128)
 #define EMAC_DEF_MAX_TX_CH		(1) /* Max TX channels configured */
 #define EMAC_DEF_MAX_RX_CH		(1) /* Max RX channels configured */
 #define EMAC_POLL_WEIGHT		(64) /* Default NAPI poll weight */
@@ -336,6 +337,7 @@ struct emac_priv {
 	u32 mac_hash2;
 	u32 multicast_hash_cnt[EMAC_NUM_MULTICAST_BITS];
 	u32 rx_addr_type;
+	atomic_t cur_tx;
 	const char *phy_id;
 	struct phy_device *phydev;
 	spinlock_t lock;
@@ -1007,7 +1009,7 @@ static void emac_rx_handler(void *token, int len, int status)
 	int			ret;
 
 	/* free and bail if we are shutting down */
-	if (unlikely(!netif_running(ndev) || !netif_carrier_ok(ndev))) {
+	if (unlikely(!netif_running(ndev))) {
 		dev_kfree_skb_any(skb);
 		return;
 	}
@@ -1036,7 +1038,9 @@ static void emac_rx_handler(void *token, int len, int status)
 recycle:
 	ret = cpdma_chan_submit(priv->rxchan, skb, skb->data,
 			skb_tailroom(skb), GFP_KERNEL);
-	if (WARN_ON(ret < 0))
+
+	WARN_ON(ret == -ENOMEM);
+	if (unlikely(ret < 0))
 		dev_kfree_skb_any(skb);
 }
 
@@ -1044,6 +1048,9 @@ static void emac_tx_handler(void *token, int len, int status)
 {
 	struct sk_buff		*skb = token;
 	struct net_device	*ndev = skb->dev;
+	struct emac_priv	*priv = netdev_priv(ndev);
+
+	atomic_dec(&priv->cur_tx);
 
 	if (unlikely(netif_queue_stopped(ndev)))
 		netif_start_queue(ndev);
@@ -1092,6 +1099,9 @@ static int emac_dev_xmit(struct sk_buff *skb, struct net_device *ndev)
 		goto fail_tx;
 	}
 
+	if (atomic_inc_return(&priv->cur_tx) >= EMAC_DEF_TX_NUM_DESC)
+		netif_stop_queue(ndev);
+
 	return NETDEV_TX_OK;
 
 fail_tx:
@@ -1592,8 +1602,9 @@ static int emac_dev_open(struct net_device *ndev)
 		if (IS_ERR(priv->phydev)) {
 			dev_err(emac_dev, "could not connect to phy %s\n",
 				priv->phy_id);
+			ret = PTR_ERR(priv->phydev);
 			priv->phydev = NULL;
-			return PTR_ERR(priv->phydev);
+			return ret;
 		}
 
 		priv->link = 0;
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index 7615040df756..af8b8fc39eb2 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -313,13 +313,14 @@ static int __devinit davinci_mdio_probe(struct platform_device *pdev)
 	data->bus->reset	= davinci_mdio_reset,
 	data->bus->parent	= dev;
 	data->bus->priv		= data;
-	snprintf(data->bus->id, MII_BUS_ID_SIZE, "%x", pdev->id);
+	snprintf(data->bus->id, MII_BUS_ID_SIZE, "%s-%x",
+		pdev->name, pdev->id);
 
 	data->clk = clk_get(dev, NULL);
 	if (IS_ERR(data->clk)) {
-		data->clk = NULL;
 		dev_err(dev, "failed to get device clock\n");
 		ret = PTR_ERR(data->clk);
+		data->clk = NULL;
 		goto bail_out;
 	}