[PATCH next] net: netfilter: nfnetlink_cthelper: Remove 'const' and '&' to avoid warnings

From: Chen Gang
Date: Wed Dec 24 2014 - 10:05:13 EST

The related code can be simplified, and also can avoid related warnings
(with allmodconfig under parisc):

CC [M] net/netfilter/nfnetlink_cthelper.o
net/netfilter/nfnetlink_cthelper.c: In function ânfnl_cthelper_from_nlattrâ:
net/netfilter/nfnetlink_cthelper.c:97:9: warning: passing argument 1 o âmemcpyâ discards âconstâ qualifier from pointer target type [-Wdiscarded-array-qualifiers]
memcpy(&help->data, nla_data(attr), help->helper->data_len);
In file included from include/linux/string.h:17:0,
from include/uapi/linux/uuid.h:25,
from include/linux/uuid.h:23,
from include/linux/mod_devicetable.h:12,
from ./arch/parisc/include/asm/hardware.h:4,
from ./arch/parisc/include/asm/processor.h:15,
from ./arch/parisc/include/asm/spinlock.h:6,
from ./arch/parisc/include/asm/atomic.h:21,
from include/linux/atomic.h:4,
from ./arch/parisc/include/asm/bitops.h:12,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/module.h:9,
from net/netfilter/nfnetlink_cthelper.c:11:
./arch/parisc/include/asm/string.h:8:8: note: expected âvoid *â but argument is of type âconst char (*)[]â
void * memcpy(void * dest,const void *src,size_t count);

Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
net/netfilter/nfnetlink_cthelper.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c
index 9e287cb..a5599fc 100644
--- a/net/netfilter/nfnetlink_cthelper.c
+++ b/net/netfilter/nfnetlink_cthelper.c
@@ -86,7 +86,7 @@ nfnl_cthelper_parse_tuple(struct nf_conntrack_tuple *tuple,
static int
nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
- const struct nf_conn_help *help = nfct_help(ct);
+ struct nf_conn_help *help = nfct_help(ct);

if (attr == NULL)
return -EINVAL;
@@ -94,7 +94,7 @@ nfnl_cthelper_from_nlattr(struct nlattr *attr, struct nf_conn *ct)
if (help->helper->data_len == 0)
return -EINVAL;

- memcpy(&help->data, nla_data(attr), help->helper->data_len);
+ memcpy(help->data, nla_data(attr), help->helper->data_len);
return 0;

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