1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index ef140ebde117..07473cd84121 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -925,11 +925,8 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
         status = acpi_resource_to_address64(res, &addr);
 
         if (ACPI_SUCCESS(status)) {
-                unsigned long size;
-
-                size = addr.maximum - addr.minimum + 1;
                 hdp->hd_phys_address = addr.minimum;
-                hdp->hd_address = ioremap(addr.minimum, size);
+                hdp->hd_address = ioremap(addr.minimum, addr.address_length);
 
                 if (hpet_is_known(hdp)) {
                         printk(KERN_DEBUG "%s: 0x%lx is busy\n",