Mar 22 2016

staging: rtl8712: mlme_linux: Clean up tests if NULL returned on failure 

Author: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>

Some functions like kzalloc return NULL on failure.
When NULL represents failure, !x is commonly used.

This was done using Coccinelle:

@@
expression *e;
identifier l1;
@@

e = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\)(...);
...
- e == NULL
+ !e

Signed-off-by: Bhaktipriya Shridhar 
Signed-off-by: Greg Kroah-Hartman 

---
 drivers/staging/rtl8712/mlme_linux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/drivers/staging/rtl8712/mlme_linux.c b/drivers/staging/rtl8712/mlme_linux.c
index e4e4bde..af7c4a4 100644
--- a/drivers/staging/rtl8712/mlme_linux.c
+++ b/drivers/staging/rtl8712/mlme_linux.c
@@ -153,7 +153,7 @@ void r8712_report_sec_ie(struct _adapter *adapter, u8 authmode, u8 *sec_ie)
 	buff = NULL;
 	if (authmode == _WPA_IE_ID_) {
 		buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
-		if (buff == NULL)
+		if (!buff)
 			return;
 		p = buff;
 		p += sprintf(p, "ASSOCINFO(ReqIEs=");

qlambert