[PPP]: Remove ptr comparisons to 0

fix sparse warnings "Using plain integer as NULL pointer"

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 17 deletions

diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index 8d278c87ba48..f023d5b67e6e 100644
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -160,7 +160,7 @@ ppp_asynctty_open(struct tty_struct *tty)
 
         err = -ENOMEM;
         ap = kzalloc(sizeof(*ap), GFP_KERNEL);
-        if (ap == 0)
+        if (!ap)
                 goto out;
 
         /* initialize the asyncppp structure */
@@ -215,7 +215,7 @@ ppp_asynctty_close(struct tty_struct *tty)
         ap = tty->disc_data;
         tty->disc_data = NULL;
         write_unlock_irq(&disc_data_lock);
-        if (ap == 0)
+        if (!ap)
                 return;
 
         /*
@@ -230,10 +230,10 @@ ppp_asynctty_close(struct tty_struct *tty)
         tasklet_kill(&ap->tsk);
 
         ppp_unregister_channel(&ap->chan);
-        if (ap->rpkt != 0)
+        if (ap->rpkt)
                 kfree_skb(ap->rpkt);
         skb_queue_purge(&ap->rqueue);
-        if (ap->tpkt != 0)
+        if (ap->tpkt)
                 kfree_skb(ap->tpkt);
         kfree(ap);
 }
@@ -285,13 +285,13 @@ ppp_asynctty_ioctl(struct tty_struct *tty, struct file *file,
         int err, val;
         int __user *p = (int __user *)arg;
 
-        if (ap == 0)
+        if (!ap)
                 return -ENXIO;
         err = -EFAULT;
         switch (cmd) {
         case PPPIOCGCHAN:
                 err = -ENXIO;
-                if (ap == 0)
+                if (!ap)
                         break;
                 err = -EFAULT;
                 if (put_user(ppp_channel_index(&ap->chan), p))
@@ -301,7 +301,7 @@ ppp_asynctty_ioctl(struct tty_struct *tty, struct file *file,
 
         case PPPIOCGUNIT:
                 err = -ENXIO;
-                if (ap == 0)
+                if (!ap)
                         break;
                 err = -EFAULT;
                 if (put_user(ppp_unit_number(&ap->chan), p))
@@ -350,7 +350,7 @@ ppp_asynctty_receive(struct tty_struct *tty, const unsigned char *buf,
         struct asyncppp *ap = ap_get(tty);
         unsigned long flags;
 
-        if (ap == 0)
+        if (!ap)
                 return;
         spin_lock_irqsave(&ap->recv_lock, flags);
         ppp_async_input(ap, buf, cflags, count);
@@ -369,7 +369,7 @@ ppp_asynctty_wakeup(struct tty_struct *tty)
         struct asyncppp *ap = ap_get(tty);
 
         clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-        if (ap == 0)
+        if (!ap)
                 return;
         set_bit(XMIT_WAKEUP, &ap->xmit_flags);
         tasklet_schedule(&ap->tsk);
@@ -684,7 +684,7 @@ ppp_async_push(struct asyncppp *ap)
                                 tty_stuffed = 1;
                         continue;
                 }
-                if (ap->optr >= ap->olim && ap->tpkt != 0) {
+                if (ap->optr >= ap->olim && ap->tpkt) {
                         if (ppp_async_encode(ap)) {
                                 /* finished processing ap->tpkt */
                                 clear_bit(XMIT_FULL, &ap->xmit_flags);
@@ -704,7 +704,7 @@ ppp_async_push(struct asyncppp *ap)
                 clear_bit(XMIT_BUSY, &ap->xmit_flags);
                 /* any more work to do? if not, exit the loop */
                 if (!(test_bit(XMIT_WAKEUP, &ap->xmit_flags)
-                      || (!tty_stuffed && ap->tpkt != 0)))
+                      || (!tty_stuffed && ap->tpkt)))
                         break;
                 /* more work to do, see if we can do it now */
                 if (test_and_set_bit(XMIT_BUSY, &ap->xmit_flags))
@@ -715,7 +715,7 @@ ppp_async_push(struct asyncppp *ap)
 
 flush:
         clear_bit(XMIT_BUSY, &ap->xmit_flags);
-        if (ap->tpkt != 0) {
+        if (ap->tpkt) {
                 kfree_skb(ap->tpkt);
                 ap->tpkt = NULL;
                 clear_bit(XMIT_FULL, &ap->xmit_flags);
@@ -848,7 +848,7 @@ ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
                 s = 0;
                 for (i = 0; i < count; ++i) {
                         c = buf[i];
-                        if (flags != 0 && flags[i] != 0)
+                        if (flags && flags[i] != 0)
                                 continue;
                         s |= (c & 0x80)? SC_RCV_B7_1: SC_RCV_B7_0;
                         c = ((c >> 4) ^ c) & 0xf;
@@ -865,7 +865,7 @@ ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
                         n = scan_ordinary(ap, buf, count);
 
                 f = 0;
-                if (flags != 0 && (ap->state & SC_TOSS) == 0) {
+                if (flags && (ap->state & SC_TOSS) == 0) {
                         /* check the flags to see if any char had an error */
                         for (j = 0; j < n; ++j)
                                 if ((f = flags[j]) != 0)
@@ -878,9 +878,9 @@ ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
                 } else if (n > 0 && (ap->state & SC_TOSS) == 0) {
                         /* stuff the chars in the skb */
                         skb = ap->rpkt;
-                        if (skb == 0) {
+                        if (!skb) {
                                 skb = dev_alloc_skb(ap->mru + PPP_HDRLEN + 2);
-                                if (skb == 0)
+                                if (!skb)
                                         goto nomem;
                                 ap->rpkt = skb;
                         }
@@ -927,7 +927,7 @@ ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
                 ++n;
 
                 buf += n;
-                if (flags != 0)
+                if (flags)
                         flags += n;
                 count -= n;
         }