netdev - [PATCH 5/5] netfilter: xt_TEE: Clean up tests if NULL returned on failure

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Date:   Tue, 21 Mar 2017 14:14:39 +0530
From:   simran singhal <singhalsimran0@...il.com>
To:     pablo@...filter.org
Cc:     kadlec@...ckhole.kfki.hu, davem@...emloft.net,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, outreachy-kernel@...glegroups.com
Subject: [PATCH 5/5] netfilter: xt_TEE: Clean up tests if NULL returned on failure

Some functions like kmalloc/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: simran singhal <singhalsimran0@...il.com>
---

 --This is my contribution to the netfilter project of
   Outreachy Round 14.

 net/netfilter/xt_TEE.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/xt_TEE.c b/net/netfilter/xt_TEE.c
index 86b0580..5df3282 100644
--- a/net/netfilter/xt_TEE.c
+++ b/net/netfilter/xt_TEE.c
@@ -95,7 +95,7 @@ static int tee_tg_check(const struct xt_tgchk_param *par)
 			return -EINVAL;
 
 		priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-		if (priv == NULL)
+		if (!priv)
 			return -ENOMEM;
 
 		priv->tginfo  = info;
-- 
2.7.4