1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c
index e24a7b095dd6..63abfd72542d 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; 
         }