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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 83905a97c56c..01a33cc58cf1 100644
--- 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;
 }