[PATCH] xen/pciback: use resource_size()

[Thomas Meyer]

From: Thomas Meyer <thomas@xxxxxxxx>

 Use resource_size function on resource object
 instead of explicit computation.

 The semantic patch that makes this output is available
 in scripts/coccinelle/api/resource_size.cocci.

 More information about semantic patching is available at
 http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@xxxxxxxx>
---

diff -u -p a/drivers/xen/xen-pciback/conf_space_header.c b/drivers/xen/xen-pciback/conf_space_header.c
--- a/drivers/xen/xen-pciback/conf_space_header.c 2011-07-26 00:46:09.730171570 +0200
+++ b/drivers/xen/xen-pciback/conf_space_header.c 2011-08-01 23:02:39.180421787 +0200
@@ -187,7 +187,7 @@ static inline void read_dev_bar(struct p
 
 	bar_info->val = res[pos].start |
 			(res[pos].flags & PCI_REGION_FLAG_MASK);
-	bar_info->len_val = res[pos].end - res[pos].start + 1;
+	bar_info->len_val = resource_size(&res[pos]);
 }
 
 static void *bar_init(struct pci_dev *dev, int offset)


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