2 files changed, 3 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 7ee50f0547cb..6658a1589955 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -126,7 +126,7 @@ void __init reserve_crashkernel(void)
         /* We might have got these values via the command line or the
          * device tree, either way sanitise them now. */
 
-        crash_size = crashk_res.end - crashk_res.start + 1;
+        crash_size = resource_size(&crashk_res);
 
 #ifndef CONFIG_RELOCATABLE
         if (crashk_res.start != KDUMP_KERNELBASE)
@@ -222,7 +222,7 @@ static void __init export_crashk_values(struct device_node *node)
 
         if (crashk_res.start != 0) {
                 prom_add_property(node, &crashk_base_prop);
-                crashk_size = crashk_res.end - crashk_res.start + 1;
+                crashk_size = resource_size(&crashk_res);
                 prom_add_property(node, &crashk_size_prop);
         }
 }
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 893af2a9cd03..3764e37205fb 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -107,7 +107,7 @@ static resource_size_t pcibios_io_size(const struct pci_controller *hose)
 #ifdef CONFIG_PPC64
         return hose->pci_io_size;
 #else
-        return hose->io_resource.end - hose->io_resource.start + 1;
+        return resource_size(&hose->io_resource);
 #endif
 }