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 <singhalsimr...@gmail.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