doc: fix some syntax errors in netlink mmap sample code
Cc: Patrick McHardy <kaber@trash.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/netlink_mmap.txt b/Documentation/networking/netlink_mmap.txt
index e6088ba..5cc6005 100644
--- a/Documentation/networking/netlink_mmap.txt
+++ b/Documentation/networking/netlink_mmap.txt
@@ -274,9 +274,9 @@
/* Get next frame header */
hdr = rx_ring + frame_offset;
- if (hdr->nm_status == NL_MMAP_STATUS_VALID)
+ if (hdr->nm_status == NL_MMAP_STATUS_VALID) {
/* Regular memory mapped frame */
- nlh = (void *hdr) + NL_MMAP_HDRLEN;
+ nlh = (void *)hdr + NL_MMAP_HDRLEN;
len = hdr->nm_len;
/* Release empty message immediately. May happen