1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index d8d743af3225..3f6ebc6c665a 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -151,14 +151,14 @@ int __devinit __pata_platform_probe(struct device *dev,
          */
         if (mmio) {
                 ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
-                                io_res->end - io_res->start + 1);
+                                resource_size(io_res));
                 ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
-                                ctl_res->end - ctl_res->start + 1);
+                                resource_size(ctl_res));
         } else {
                 ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
-                                io_res->end - io_res->start + 1);
+                                resource_size(io_res));
                 ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
-                                ctl_res->end - ctl_res->start + 1);
+                                resource_size(ctl_res));
         }
         if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
                 dev_err(dev, "failed to map IO/CTL base\n");