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 e8ca1ec105f8565aeec6e7c247875de3e9dc9267..85605fb1e3600cef6629135718b043c75f9deff8 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);