netfilter: bitwise: remove NULL comparisons from attribute checks.

In later patches, we will be adding more checks.  In order to be
consistent and prevent complaints from checkpatch.pl, replace the
existing comparisons with NULL with logical NOT operators.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nft_bitwise.c b/net/netfilter/nft_bitwise.c
index e8ca1ec..85605fb 100644 (file)
--- a/net/netfilter/nft_bitwise.c
+++ b/net/netfilter/nft_bitwise.c
@@ -52,11 +52,11 @@ static int nft_bitwise_init(const struct nft_ctx *ctx,
        u32 len;
        int err;
 
-       if (tb[NFTA_BITWISE_SREG] == NULL ||
-           tb[NFTA_BITWISE_DREG] == NULL ||
-           tb[NFTA_BITWISE_LEN] == NULL ||
-           tb[NFTA_BITWISE_MASK] == NULL ||
-           tb[NFTA_BITWISE_XOR] == NULL)
+       if (!tb[NFTA_BITWISE_SREG] ||
+           !tb[NFTA_BITWISE_DREG] ||
+           !tb[NFTA_BITWISE_LEN]  ||
+           !tb[NFTA_BITWISE_MASK] ||
+           !tb[NFTA_BITWISE_XOR])
                return -EINVAL;
 
        err = nft_parse_u32_check(tb[NFTA_BITWISE_LEN], U8_MAX, &len);