af_packet: fix sparse warning
authorMichael S. Tsirkin <mst@redhat.com>
Mon, 24 Nov 2014 11:32:16 +0000 (13:32 +0200)
committerDavid S. Miller <davem@davemloft.net>
Mon, 24 Nov 2014 21:15:36 +0000 (16:15 -0500)
af_packet produces lots of these:
net/packet/af_packet.c:384:39: warning: incorrect type in return expression (different modifiers)
net/packet/af_packet.c:384:39:    expected struct page [pure] *
net/packet/af_packet.c:384:39:    got struct page *

this seems to be because sparse does not realize that _pure
refers to function, not the returned pointer.

Tweak code slightly to avoid the warning.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/packet/af_packet.c

index 87d20f48ff06195766e8ecd20a3fcfae5ccae690..07c04a841ba09c5ee5b0bc7718d4e6c87ac561e1 100644 (file)
@@ -378,7 +378,7 @@ static void unregister_prot_hook(struct sock *sk, bool sync)
                __unregister_prot_hook(sk, sync);
 }
 
-static inline __pure struct page *pgv_to_page(void *addr)
+static inline struct page * __pure pgv_to_page(void *addr)
 {
        if (is_vmalloc_addr(addr))
                return vmalloc_to_page(addr);