NULL noise in drivers/net

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 15 insertions, 19 deletions

diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 37c52e1..6635ece 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -491,13 +491,13 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
                     int pos;
                     int timeout = 500000;
 
-                    if(xc.data == 0x0){
+                    if (!xc.data) {
                             ret = -EINVAL;
                             break;
                     }
 
                     data = kmalloc(xc.len, GFP_KERNEL);
-                    if(data == 0x0){
+                    if (!data) {
                             printk(KERN_WARNING "%s: Failed to allocate memory for copy\n", dev->name);
                             ret = -ENOMEM;
                             break;
@@ -1643,7 +1643,7 @@ static int lmc_rx (struct net_device *dev) /*fold00*/
          * just allocate an skb buff and continue.
          */
         
-        if(skb == 0x0){
+        if (!skb) {
             nsb = dev_alloc_skb (LMC_PKT_BUF_SZ + 2);
             if (nsb) {
                 sc->lmc_rxq[i] = nsb;
diff --git a/drivers/net/wan/lmc/lmc_media.c b/drivers/net/wan/lmc/lmc_media.c
index c9c878c..8aa461c 100644
--- a/drivers/net/wan/lmc/lmc_media.c
+++ b/drivers/net/wan/lmc/lmc_media.c
@@ -1219,10 +1219,6 @@ lmc_t1_watchdog (lmc_softc_t * const sc)
 static void
 lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl)
 {
-  if (ctl == 0)
-    {
-      sc->ictl.keepalive_onoff = LMC_CTL_ON;
-
-      return;
-    }
+	if (!ctl)
+		sc->ictl.keepalive_onoff = LMC_CTL_ON;
 }
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 99fee2f..57914fb 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -2365,17 +2365,17 @@ static void falc_intr(pc300_t * card)
 
 static irqreturn_t cpc_intr(int irq, void *dev_id)
 {
-	pc300_t *card;
+	pc300_t *card = dev_id;
 	volatile ucchar plx_status;
 
-	if ((card = (pc300_t *) dev_id) == 0) {
+	if (!card) {
 #ifdef PC300_DEBUG_INTR
 		printk("cpc_intr: spurious intr %d\n", irq);
 #endif
 		return IRQ_NONE;		/* spurious intr */
 	}
 
-	if (card->hw.rambase == 0) {
+	if (!card->hw.rambase) {
 #ifdef PC300_DEBUG_INTR
 		printk("cpc_intr: spurious intr2 %d\n", irq);
 #endif
@@ -3648,7 +3648,7 @@ static void __devexit cpc_remove_one(struct pci_dev *pdev)
 {
 	pc300_t *card = pci_get_drvdata(pdev);
 
-	if (card->hw.rambase != 0) {
+	if (card->hw.rambase) {
 		int i;
 
 		/* Disable interrupts on the PCI bridge */
diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c
index e24a7b0..63abfd7 100644
--- a/drivers/net/wan/pc300_tty.c
+++ b/drivers/net/wan/pc300_tty.c
@@ -313,7 +313,7 @@ static int cpc_tty_open(struct tty_struct *tty, struct file *flip)
 	if (cpc_tty->num_open == 0) { /* first open of this tty */
 		if (!cpc_tty_area[port].buf_tx){
 			cpc_tty_area[port].buf_tx = kmalloc(CPC_TTY_MAX_MTU,GFP_KERNEL);
-			if (cpc_tty_area[port].buf_tx == 0){
+			if (!cpc_tty_area[port].buf_tx) {
 				CPC_TTY_DBG("%s: error in memory allocation\n",cpc_tty->name);
 				return -ENOMEM;
 			}
@@ -678,7 +678,7 @@ static void cpc_tty_rx_work(struct work_struct *work)
 		for (j=0; j < CPC_TTY_NPORTS; j++) {
 			cpc_tty = &cpc_tty_area[port];
 		
-			if ((buf=cpc_tty->buf_rx.first) != 0) {
+			if ((buf=cpc_tty->buf_rx.first) != NULL) {
 				if (cpc_tty->tty) {
 					ld = tty_ldisc_ref(cpc_tty->tty);
 					if (ld) {
@@ -784,7 +784,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
 		} 
 		
 		new = kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
-		if (new == 0) {
+		if (!new) {
 			cpc_tty_rx_disc_frame(pc300chan);
 			continue;
 		}
@@ -863,7 +863,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
 			} 
 			new->size = rx_len;
 			new->next = NULL;
-			if (cpc_tty->buf_rx.first == 0) {
+			if (cpc_tty->buf_rx.first == NULL) {
 				cpc_tty->buf_rx.first = new;
 				cpc_tty->buf_rx.last = new;
 			} else {
@@ -891,7 +891,7 @@ static void cpc_tty_tx_work(struct work_struct *work)
 
 	CPC_TTY_DBG("%s: cpc_tty_tx_work init\n",cpc_tty->name);
 	
-	if ((tty = cpc_tty->tty) == 0) { 
+	if ((tty = cpc_tty->tty) == NULL) { 
 		CPC_TTY_DBG("%s: the interface is not opened\n",cpc_tty->name);
 		return; 
 	}
@@ -1027,7 +1027,7 @@ void cpc_tty_unregister_service(pc300dev_t *pc300dev)
 	ulong flags;
 	int res;
 
-	if ((cpc_tty= (st_cpc_tty_area *) pc300dev->cpc_tty) == 0) { 
+	if ((cpc_tty= (st_cpc_tty_area *) pc300dev->cpc_tty) == NULL) {
 		CPC_TTY_DBG("%s: interface is not TTY\n", pc300dev->dev->name);
 		return; 
 	}