drivers: fix integer as NULL pointer warnings

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 3 insertions, 3 deletions

diff --git a/drivers/char/cs5535_gpio.c b/drivers/char/cs5535_gpio.c
index c2d23cae9515..c0a4a0bb509e 100644
--- a/drivers/char/cs5535_gpio.c
+++ b/drivers/char/cs5535_gpio.c
@@ -215,7 +215,7 @@ static int __init cs5535_gpio_init(void)
         else
                 mask = 0x0b003c66;
 
-        if (request_region(gpio_base, CS5535_GPIO_SIZE, NAME) == 0) {
+        if (!request_region(gpio_base, CS5535_GPIO_SIZE, NAME)) {
                 printk(KERN_ERR NAME ": can't allocate I/O for GPIO\n");
                 return -ENODEV;
         }
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index 82bcfb9c839a..06803ed5568c 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -501,7 +501,7 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
                         __FILE__,__LINE__, count);
                 
         /* This can happen if stuff comes in on the backup tty */
-        if (n_hdlc == 0 || tty != n_hdlc->tty)
+        if (!n_hdlc || tty != n_hdlc->tty)
                 return;
                 
         /* verify line is using HDLC discipline */
diff --git a/drivers/char/rio/rioroute.c b/drivers/char/rio/rioroute.c
index 85091ff74d96..7a9df7dcf9a8 100644
--- a/drivers/char/rio/rioroute.c
+++ b/drivers/char/rio/rioroute.c
@@ -526,7 +526,7 @@ void RIOFixPhbs(struct rio_info *p, struct Host *HostP, unsigned int unit)
                          ** If RTA is not powered on, the tx packets will be
                          ** unset, so go no further.
                          */
-                        if (PortP->TxStart == 0) {
+                        if (!PortP->TxStart) {
                                 rio_dprintk(RIO_DEBUG_ROUTE, "Tx pkts not set up yet\n");
                                 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
                                 break;