diff -ruN 510-mtrr-remove-sysdev-old/arch/i386/kernel/cpu/mtrr/main.c 510-mtrr-remove-sysdev-new/arch/i386/kernel/cpu/mtrr/main.c
--- 510-mtrr-remove-sysdev-old/arch/i386/kernel/cpu/mtrr/main.c	2004-11-03 21:51:13.000000000 +1100
+++ 510-mtrr-remove-sysdev-new/arch/i386/kernel/cpu/mtrr/main.c	2004-11-04 16:27:40.000000000 +1100
@@ -167,7 +167,6 @@
 	atomic_dec(&data->count);
 	local_irq_restore(flags);
 }
-
 #endif
 
 /**
@@ -564,7 +563,7 @@
 
 static struct mtrr_value * mtrr_state;
 
-static int mtrr_save(struct sys_device * sysdev, u32 state)
+int mtrr_save(void)
 {
 	int i;
 	int size = num_var_ranges * sizeof(struct mtrr_value);
@@ -584,28 +583,27 @@
 	return 0;
 }
 
-static int mtrr_restore(struct sys_device * sysdev)
+/* Restore mtrrs on this CPU only.
+ * Done with interrupts disabled via __smp_lowlevel_suspend
+ */
+int mtrr_restore_one_cpu(void)
 {
 	int i;
 
 	for (i = 0; i < num_var_ranges; i++) {
 		if (mtrr_state[i].lsize) 
-			set_mtrr(i,
+			mtrr_if->set(i,
 				 mtrr_state[i].lbase,
 				 mtrr_state[i].lsize,
 				 mtrr_state[i].ltype);
 	}
-	kfree(mtrr_state);
 	return 0;
 }
 
-
-
-static struct sysdev_driver mtrr_sysdev_driver = {
-	.suspend	= mtrr_save,
-	.resume		= mtrr_restore,
-};
-
+void mtrr_restore_finish(void)
+{
+	kfree(mtrr_state);
+}
 
 /**
  * mtrr_init - initialize mtrrs on the boot CPU
@@ -692,8 +690,7 @@
 		init_table();
 		init_other_cpus();
 
-		return sysdev_driver_register(&cpu_sysdev_class,
-					      &mtrr_sysdev_driver);
+		return 0;
 	}
 	return -ENXIO;
 }
