xen-netback: fix sparse warning

Fix warning about 0 used as NULL.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 83905a9..01a33cc 100644 (file)
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1551,7 +1551,7 @@ static void xen_netbk_idx_release(struct xen_netbk *netbk, u16 pending_idx,
 
        xenvif_put(vif);
 
-       netbk->mmap_pages[pending_idx]->mapping = 0;
+       netbk->mmap_pages[pending_idx]->mapping = NULL;
        put_page(netbk->mmap_pages[pending_idx]);
        netbk->mmap_pages[pending_idx] = NULL;
 }