[patch added to 3.12-stable] devres: fix a for loop bounds check

From: Dan Carpenter <redacted>

This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.

===============

commit 1f35d04a02a652f14566f875aef3a6f2af4cb77b upstream.

The iomap[] array has PCIM_IOMAP_MAX (6) elements and not
DEVICE_COUNT_RESOURCE (16).  This bug was found using a static checker.
It may be that the "if (!(mask & (1 << i)))" check means we never
actually go past the end of the array in real life.

Fixes: ec04b075843d ('iomap: implement pcim_iounmap_regions()')
Signed-off-by: Dan Carpenter <redacted>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Slaby <redacted>
Signed-off-by: Jiri Slaby <redacted>
---
 lib/devres.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/devres.c b/lib/devres.c
index 823533138fa0..20afaf181b27 100644
--- a/lib/devres.c
+++ b/lib/devres.c

@@ -423,7 +423,7 @@ void pcim_iounmap_regions(struct pci_dev *pdev, int mask)
 	if (!iomap)
 		return;
 
-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+	for (i = 0; i < PCIM_IOMAP_MAX; i++) {
 		if (!(mask & (1 << i)))
 			continue;
 

-- 
2.7.2