selinux: Adjust four checks for null pointers

The script "checkpatch.pl" pointed information out like the following.

Comparison to NULL could be written !…

Thus fix affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Paul Moore <paul@paul-moore.com>

diff --git a/security/selinux/ss/hashtab.c b/security/selinux/ss/hashtab.c
index dc99fff..3858706 100644 (file)
--- a/security/selinux/ss/hashtab.c
+++ b/security/selinux/ss/hashtab.c
@@ -17,7 +17,7 @@ struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, const void *
        u32 i;
 
        p = kzalloc(sizeof(*p), GFP_KERNEL);
-       if (p == NULL)
+       if (!p)
                return p;
 
        p->size = size;
@@ -25,7 +25,7 @@ struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, const void *
        p->hash_value = hash_value;
        p->keycmp = keycmp;
        p->htable = kmalloc_array(size, sizeof(*p->htable), GFP_KERNEL);
-       if (p->htable == NULL) {
+       if (!p->htable) {
                kfree(p);
                return NULL;
        }
@@ -58,7 +58,7 @@ int hashtab_insert(struct hashtab *h, void *key, void *datum)
                return -EEXIST;
 
        newnode = kzalloc(sizeof(*newnode), GFP_KERNEL);
-       if (newnode == NULL)
+       if (!newnode)
                return -ENOMEM;
        newnode->key = key;
        newnode->datum = datum;
@@ -87,7 +87,7 @@ void *hashtab_search(struct hashtab *h, const void *key)
        while (cur && h->keycmp(h, key, cur->key) > 0)
                cur = cur->next;
 
-       if (cur == NULL || (h->keycmp(h, key, cur->key) != 0))
+       if (!cur || (h->keycmp(h, key, cur->key) != 0))
                return NULL;
 
        return cur->datum;