[NETLINK]: Introduce nlmsg_hdr() helper

For the common "(struct nlmsghdr *)skb->data" sequence, so that we reduce the
number of direct accesses to skb->data and for consistency with all the other
cast skb member helpers.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_netlink.c b/drivers/scsi/scsi_netlink.c
index 1b59b27e887f..45646a285244 100644
--- a/drivers/scsi/scsi_netlink.c
+++ b/drivers/scsi/scsi_netlink.c
@@ -50,7 +50,7 @@ scsi_nl_rcv_msg(struct sk_buff *skb)
         while (skb->len >= NLMSG_SPACE(0)) {
                 err = 0;
 
-                nlh = (struct nlmsghdr *) skb->data;
+                nlh = nlmsg_hdr(skb);
                 if ((nlh->nlmsg_len < (sizeof(*nlh) + sizeof(*hdr))) ||
                     (skb->len < nlh->nlmsg_len)) {
                         printk(KERN_WARNING "%s: discarding partial skb\n",