3.16.7-ckt16 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Dan Carpenter <[email protected]>

commit 50c2e4dd6749725338621fff456b26d3a592259f upstream.

The > should be >=.  I also added spaces around the '-' operations so
the code is a little more consistent and matches the condition better.

Fixes: f53c3fe8dad7 ('xen-netback: Introduce TX grant mapping')
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Luis Henriques <[email protected]>
---
 drivers/net/xen-netback/netback.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/xen-netback/netback.c 
b/drivers/net/xen-netback/netback.c
index c65b636bcab9..09e4f4ef4eb8 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1703,13 +1703,13 @@ static inline void xenvif_tx_dealloc_action(struct 
xenvif_queue *queue)
                smp_rmb();
 
                while (dc != dp) {
-                       BUG_ON(gop - queue->tx_unmap_ops > MAX_PENDING_REQS);
+                       BUG_ON(gop - queue->tx_unmap_ops >= MAX_PENDING_REQS);
                        pending_idx =
                                queue->dealloc_ring[pending_index(dc++)];
 
-                       pending_idx_release[gop-queue->tx_unmap_ops] =
+                       pending_idx_release[gop - queue->tx_unmap_ops] =
                                pending_idx;
-                       queue->pages_to_unmap[gop-queue->tx_unmap_ops] =
+                       queue->pages_to_unmap[gop - queue->tx_unmap_ops] =
                                queue->mmap_pages[pending_idx];
                        gnttab_set_unmap_op(gop,
                                            idx_to_kaddr(queue, pending_idx),
--
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