Messages in this thread Patch in this message | | | From | simran singhal <> | Subject | [PATCH 4/5] netfilter: nfnetlink: Clean up tests if NULL returned on failure | Date | Tue, 21 Mar 2017 14:14:38 +0530 |
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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@gmail.com> ---
--This is my contribution to the netfilter project of Outreachy Round 14.
net/netfilter/nfnetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 68eda920..c39f16c 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -232,7 +232,7 @@ static int nfnl_err_add(struct list_head *list, struct nlmsghdr *nlh, int err) struct nfnl_err *nfnl_err; nfnl_err = kmalloc(sizeof(struct nfnl_err), GFP_KERNEL); - if (nfnl_err == NULL) + if (!nfnl_err) return -ENOMEM; nfnl_err->nlh = nlh; -- 2.7.4
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