Merge branch 'marvell-static-code-analysis'

Markus Elfring says:

====================
Ethernet-Marvell: Fine-tuning for several function implementations

Several update suggestions were taken into account
from static source code analysis.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvneta.c

@@ -1107,7 +1107,7 @@ static void mvneta_port_up(struct mvneta_port *pp)
 	q_map = 0;
 	for (queue = 0; queue < txq_number; queue++) {
 		struct mvneta_tx_queue *txq = &pp->txqs[queue];
-		if (txq->descs != NULL)
+		if (txq->descs)
 			q_map |= (1 << queue);
 	}
 	mvreg_write(pp, MVNETA_TXQ_CMD, q_map);
@@ -1116,7 +1116,7 @@ static void mvneta_port_up(struct mvneta_port *pp)
 	for (queue = 0; queue < rxq_number; queue++) {
 		struct mvneta_rx_queue *rxq = &pp->rxqs[queue];
 
-		if (rxq->descs != NULL)
+		if (rxq->descs)
 			q_map |= (1 << queue);
 	}
 	mvreg_write(pp, MVNETA_RXQ_CMD, q_map);
@@ -2850,7 +2850,7 @@ static int mvneta_rxq_init(struct mvneta_port *pp,
 	rxq->descs = dma_alloc_coherent(pp->dev->dev.parent,
 					rxq->size * MVNETA_DESC_ALIGNED_SIZE,
 					&rxq->descs_phys, GFP_KERNEL);
-	if (rxq->descs == NULL)
+	if (!rxq->descs)
 		return -ENOMEM;
 
 	rxq->last_desc = rxq->size - 1;
@@ -2920,7 +2920,7 @@ static int mvneta_txq_init(struct mvneta_port *pp,
 	txq->descs = dma_alloc_coherent(pp->dev->dev.parent,
 					txq->size * MVNETA_DESC_ALIGNED_SIZE,
 					&txq->descs_phys, GFP_KERNEL);
-	if (txq->descs == NULL)
+	if (!txq->descs)
 		return -ENOMEM;
 
 	txq->last_desc = txq->size - 1;
@@ -2933,8 +2933,9 @@ static int mvneta_txq_init(struct mvneta_port *pp,
 	mvreg_write(pp, MVNETA_TXQ_BASE_ADDR_REG(txq->id), txq->descs_phys);
 	mvreg_write(pp, MVNETA_TXQ_SIZE_REG(txq->id), txq->size);
 
-	txq->tx_skb = kmalloc(txq->size * sizeof(*txq->tx_skb), GFP_KERNEL);
-	if (txq->tx_skb == NULL) {
+	txq->tx_skb = kmalloc_array(txq->size, sizeof(*txq->tx_skb),
+				    GFP_KERNEL);
+	if (!txq->tx_skb) {
 		dma_free_coherent(pp->dev->dev.parent,
 				  txq->size * MVNETA_DESC_ALIGNED_SIZE,
 				  txq->descs, txq->descs_phys);
@@ -2945,7 +2946,7 @@ static int mvneta_txq_init(struct mvneta_port *pp,
 	txq->tso_hdrs = dma_alloc_coherent(pp->dev->dev.parent,
 					   txq->size * TSO_HEADER_SIZE,
 					   &txq->tso_hdrs_phys, GFP_KERNEL);
-	if (txq->tso_hdrs == NULL) {
+	if (!txq->tso_hdrs) {
 		kfree(txq->tx_skb);
 		dma_free_coherent(pp->dev->dev.parent,
 				  txq->size * MVNETA_DESC_ALIGNED_SIZE,
@@ -4002,8 +4003,7 @@ static int mvneta_init(struct device *dev, struct mvneta_port *pp)
 	/* Set port default values */
 	mvneta_defaults_set(pp);
 
-	pp->txqs = devm_kcalloc(dev, txq_number, sizeof(struct mvneta_tx_queue),
-				GFP_KERNEL);
+	pp->txqs = devm_kcalloc(dev, txq_number, sizeof(*pp->txqs), GFP_KERNEL);
 	if (!pp->txqs)
 		return -ENOMEM;
 
@@ -4015,8 +4015,7 @@ static int mvneta_init(struct device *dev, struct mvneta_port *pp)
 		txq->done_pkts_coal = MVNETA_TXDONE_COAL_PKTS;
 	}
 
-	pp->rxqs = devm_kcalloc(dev, rxq_number, sizeof(struct mvneta_rx_queue),
-				GFP_KERNEL);
+	pp->rxqs = devm_kcalloc(dev, rxq_number, sizeof(*pp->rxqs), GFP_KERNEL);
 	if (!pp->rxqs)
 		return -ENOMEM;
 
@@ -4027,8 +4026,10 @@ static int mvneta_init(struct device *dev, struct mvneta_port *pp)
 		rxq->size = pp->rx_ring_size;
 		rxq->pkts_coal = MVNETA_RX_COAL_PKTS;
 		rxq->time_coal = MVNETA_RX_COAL_USEC;
-		rxq->buf_virt_addr = devm_kmalloc(pp->dev->dev.parent,
-						  rxq->size * sizeof(void *),
+		rxq->buf_virt_addr
+			= devm_kmalloc_array(pp->dev->dev.parent,
+					     rxq->size,
+					     sizeof(*rxq->buf_virt_addr),
 					     GFP_KERNEL);
 		if (!rxq->buf_virt_addr)
 			return -ENOMEM;

drivers/net/ethernet/marvell/pxa168_eth.c

@@ -556,11 +556,11 @@ static int init_hash_table(struct pxa168_eth_private *pep)
 	 * function.Driver can dynamically switch to them if the 1/2kB hash
 	 * table is full.
 	 */
-	if (pep->htpr == NULL) {
+	if (!pep->htpr) {
 		pep->htpr = dma_zalloc_coherent(pep->dev->dev.parent,
 						HASH_ADDR_TABLE_SIZE,
 						&pep->htpr_dma, GFP_KERNEL);
-		if (pep->htpr == NULL)
+		if (!pep->htpr)
 			return -ENOMEM;
 	} else {
 		memset(pep->htpr, 0, HASH_ADDR_TABLE_SIZE);
@@ -1036,8 +1036,7 @@ static int rxq_init(struct net_device *dev)
 	int rx_desc_num = pep->rx_ring_size;
 
 	/* Allocate RX skb rings */
-	pep->rx_skb = kzalloc(sizeof(*pep->rx_skb) * pep->rx_ring_size,
-			     GFP_KERNEL);
+	pep->rx_skb = kcalloc(rx_desc_num, sizeof(*pep->rx_skb), GFP_KERNEL);
 	if (!pep->rx_skb)
 		return -ENOMEM;
 
@@ -1096,8 +1095,7 @@ static int txq_init(struct net_device *dev)
 	int size = 0, i = 0;
 	int tx_desc_num = pep->tx_ring_size;
 
-	pep->tx_skb = kzalloc(sizeof(*pep->tx_skb) * pep->tx_ring_size,
-			     GFP_KERNEL);
+	pep->tx_skb = kcalloc(tx_desc_num, sizeof(*pep->tx_skb), GFP_KERNEL);
 	if (!pep->tx_skb)
 		return -ENOMEM;
 
@@ -1358,7 +1356,7 @@ static int pxa168_smi_write(struct mii_bus *bus, int phy_addr, int regnum,
 static int pxa168_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr,
 			       int cmd)
 {
-	if (dev->phydev != NULL)
+	if (dev->phydev)
 		return phy_mii_ioctl(dev->phydev, ifr, cmd);
 
 	return -EOPNOTSUPP;
@@ -1503,7 +1501,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
 	pep->timeout.data = (unsigned long)pep;
 
 	pep->smi_bus = mdiobus_alloc();
-	if (pep->smi_bus == NULL) {
+	if (!pep->smi_bus) {
 		err = -ENOMEM;
 		goto err_netdev;
 	}

drivers/net/ethernet/marvell/skge.c

@@ -2657,7 +2657,7 @@ static int skge_down(struct net_device *dev)
 	struct skge_hw *hw = skge->hw;
 	int port = skge->port;
 
-	if (skge->mem == NULL)
+	if (!skge->mem)
 		return 0;
 
 	netif_info(skge, ifdown, skge->netdev, "disabling interface\n");
@@ -3718,7 +3718,7 @@ static int skge_debug_show(struct seq_file *seq, void *v)
 			   t->csum_offs, t->csum_write, t->csum_start);
 	}
 
-	seq_printf(seq, "\nRx Ring:\n");
+	seq_puts(seq, "\nRx Ring:\n");
 	for (e = skge->rx_ring.to_clean; ; e = e->next) {
 		const struct skge_rx_desc *r = e->desc;
 

drivers/net/ethernet/marvell/sky2.c

@@ -4544,7 +4544,7 @@ static int sky2_debug_show(struct seq_file *seq, void *v)
 		   sky2_read32(hw, B0_Y2_SP_ICR));
 
 	if (!netif_running(dev)) {
-		seq_printf(seq, "network not running\n");
+		seq_puts(seq, "network not running\n");
 		return 0;
 	}