hwmon: Use resource_size
Use the function resource_size, which reduces the chance of introducing
off-by-one errors in calculating the resource size.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
struct resource *res;
@@
- (res->end - res->start) + 1
+ resource_size(res)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/vt1211.c b/drivers/hwmon/vt1211.c
index 120b5d6..ae33bbb 100644
--- a/drivers/hwmon/vt1211.c
+++ b/drivers/hwmon/vt1211.c
@@ -1136,7 +1136,7 @@
}
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, res->end - res->start + 1, DRVNAME)) {
+ if (!request_region(res->start, resource_size(res), DRVNAME)) {
err = -EBUSY;
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start, (unsigned long)res->end);
@@ -1209,7 +1209,7 @@
dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
EXIT_DEV_REMOVE_SILENT:
vt1211_remove_sysfs(pdev);
- release_region(res->start, res->end - res->start + 1);
+ release_region(res->start, resource_size(res));
EXIT_KFREE:
platform_set_drvdata(pdev, NULL);
kfree(data);
@@ -1228,7 +1228,7 @@
kfree(data);
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- release_region(res->start, res->end - res->start + 1);
+ release_region(res->start, resource_size(res));
return 0;
}