-# define major(Device) (((Device) >> 8) & 0xff)
-# define minor(Device) ((Device) & 0xff)
-# define makedev(Major, Minor) (((Major) << 8) | (Minor))
+# define major(device) (((device) >> 8) & 0xff)
+# define minor(device) ((device) & 0xff)
+# define makedev(major, minor) (((major) << 8) | (minor))