Staging: irda: Use !x instead of NULL comparison

Test for NULL as !x where functions that return NULL on failure are used. Done using the following semantic patch by coccinelle.

@ is_null @
expression E;
statement S;
@@

E = (\(kmalloc\|devm_kzalloc\|kmalloc_array\|devm_ioremap\| usb_alloc_urb\|alloc_netdev\|dev_alloc_skb\)(...));

(
if(!E)
S
|

(quoted diff) +1 -1

-if(E==NULL)
+if(!E)
    S

)

Signed-off-by Srishti Sharma <[email protected]>

---
 drivers/staging/irda/net/discovery.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

drivers/staging/irda/net/discovery.c +2 -3

index 364d70a..1e54954 100644
@@ -179,7 +179,7 @@ void irlmp_expire_discoveries(hashbin_t *log, __u32 saddr, int force)
 				/* Create the client specific buffer */
 				n = HASHBIN_GET_SIZE(log);
 				buffer = kmalloc(n * sizeof(struct irda_device_info), GFP_ATOMIC);
-				if (buffer == NULL) {
+				if (!buffer) {
 					spin_unlock_irqrestore(&log->hb_spinlock, flags);
 					return;
 				}

@@ -291,7 +291,7 @@ struct irda_device_info *irlmp_copy_discoveries(hashbin_t *log, int *pn,
 				/* Create the client specific buffer */
 				n = HASHBIN_GET_SIZE(log);
 				buffer = kmalloc(n * sizeof(struct irda_device_info), GFP_ATOMIC);
-				if (buffer == NULL) {
+				if (!buffer) {
 					spin_unlock_irqrestore(&log->hb_spinlock, flags);
 					return NULL;
 				}
--

2.7.4

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