[PATCH] netback: fix multi page ring size calculation.

---
 drivers/net/xen-netback/common.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index 477e5ab..f3d95b3 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h

@@ -60,9 +60,9 @@ struct xenvif_rx_meta {
 #define MAX_BUFFER_OFFSET PAGE_SIZE
 
 #define NETBK_TX_RING_SIZE(_nr_pages)					\
-	(__CONST_RING_SIZE(xen_netif_tx, PAGE_SIZE) * (_nr_pages))
+	(__CONST_RING_SIZE(xen_netif_tx, PAGE_SIZE * (_nr_pages)))
 #define NETBK_RX_RING_SIZE(_nr_pages)					\
-	(__CONST_RING_SIZE(xen_netif_rx, PAGE_SIZE) * (_nr_pages))
+	(__CONST_RING_SIZE(xen_netif_rx, PAGE_SIZE * (_nr_pages)))
 
 #define NETBK_MAX_RING_PAGE_ORDER 2
 #define NETBK_MAX_RING_PAGES      (1U << NETBK_MAX_RING_PAGE_ORDER)