1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/sysdev/mmio_nvram.c b/arch/powerpc/sysdev/mmio_nvram.c
index ddc877a3a23a..69f5814ae6d4 100644
--- a/arch/powerpc/sysdev/mmio_nvram.c
+++ b/arch/powerpc/sysdev/mmio_nvram.c
@@ -129,7 +129,7 @@ int __init mmio_nvram_init(void)
                 goto out;
         }
         nvram_addr = r.start;
-        mmio_nvram_len = r.end - r.start + 1;
+        mmio_nvram_len = resource_size(&r);
         if ( (!mmio_nvram_len) || (!nvram_addr) ) {
                 printk(KERN_WARNING "nvram: address or length is 0\n");
                 ret = -EIO;