diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h
index 9e09af34c8a87cbfc03b65c429fc99844edcd69d..48b03fff31e585b3b1929e582fa512e244ddf935 100644
--- a/arch/mips/include/asm/smp-ops.h
+++ b/arch/mips/include/asm/smp-ops.h
@@ -56,8 +56,43 @@ static inline void register_smp_ops(struct plat_smp_ops *ops)
 
 #endif /* !CONFIG_SMP */
 
-extern struct plat_smp_ops up_smp_ops;
-extern struct plat_smp_ops cmp_smp_ops;
-extern struct plat_smp_ops vsmp_smp_ops;
+static inline int register_up_smp_ops(void)
+{
+#ifdef CONFIG_SMP_UP
+	extern struct plat_smp_ops up_smp_ops;
+
+	register_smp_ops(&up_smp_ops);
+
+	return 0;
+#else
+	return -ENODEV;
+#endif
+}
+
+static inline int register_cmp_smp_ops(void)
+{
+#ifdef CONFIG_MIPS_CMP
+	extern struct plat_smp_ops cmp_smp_ops;
+
+	register_smp_ops(&cmp_smp_ops);
+
+	return 0;
+#else
+	return -ENODEV;
+#endif
+}
+
+static inline int register_vsmp_smp_ops(void)
+{
+#ifdef CONFIG_MIPS_MT_SMP
+	extern struct plat_smp_ops vsmp_smp_ops;
+
+	register_smp_ops(&vsmp_smp_ops);
+
+	return 0;
+#else
+	return -ENODEV;
+#endif
+}
 
 #endif /* __ASM_SMP_OPS_H */
diff --git a/arch/mips/mipssim/sim_setup.c b/arch/mips/mipssim/sim_setup.c
index 55f22a3afe6194bcea4f95f3ce510706a1725aa1..19700696a847060c890256844d2d836042c8b7a1 100644
--- a/arch/mips/mipssim/sim_setup.c
+++ b/arch/mips/mipssim/sim_setup.c
@@ -59,18 +59,17 @@ void __init prom_init(void)
 
 	prom_meminit();
 
-#ifdef CONFIG_MIPS_MT_SMP
-	if (cpu_has_mipsmt)
-		register_smp_ops(&vsmp_smp_ops);
-	else
-		register_smp_ops(&up_smp_ops);
-#endif
+	if (cpu_has_mipsmt) {
+		if (!register_vsmp_smp_ops())
+			return;
+
 #ifdef CONFIG_MIPS_MT_SMTC
-	if (cpu_has_mipsmt)
 		register_smp_ops(&ssmtc_smp_ops);
-	else
-		register_smp_ops(&up_smp_ops);
+			return;
 #endif
+	}
+
+	register_up_smp_ops();
 }
 
 static void __init serial_init(void)
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 31180c321a1a29b1f7c5d7a2c1b1a5f6188ee0ed..4b988b9a30d51bb373b7b34c8324a1409ec2cfe8 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -28,6 +28,7 @@
 #include <asm/io.h>
 #include <asm/system.h>
 #include <asm/cacheflush.h>
+#include <asm/smp-ops.h>
 #include <asm/traps.h>
 
 #include <asm/gcmpregs.h>
@@ -358,15 +359,14 @@ void __init prom_init(void)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
 	console_config();
 #endif
-#ifdef CONFIG_MIPS_CMP
 	/* Early detection of CMP support */
 	if (gcmp_probe(GCMP_BASE_ADDR, GCMP_ADDRSPACE_SZ))
-		register_smp_ops(&cmp_smp_ops);
-	else
-#endif
-#ifdef CONFIG_MIPS_MT_SMP
-		register_smp_ops(&vsmp_smp_ops);
-#endif
+		if (!register_cmp_smp_ops())
+			return;
+
+	if (!register_vsmp_smp_ops())
+		return;
+
 #ifdef CONFIG_MIPS_MT_SMTC
 	register_smp_ops(&msmtc_smp_ops);
 #endif
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_setup.c b/arch/mips/pmc-sierra/msp71xx/msp_setup.c
index 2413ea67877ede061a3874008e9604552e337c15..0abfbe04ffc9795213e4109b51c8bdffae252d9d 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_setup.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_setup.c
@@ -228,13 +228,11 @@ void __init prom_init(void)
 	 */
 	msp_serial_setup();
 
-#ifdef CONFIG_MIPS_MT_SMP
-	register_smp_ops(&vsmp_smp_ops);
-#endif
-
+	if (register_vsmp_smp_ops()) {
 #ifdef CONFIG_MIPS_MT_SMTC
-	register_smp_ops(&msp_smtc_smp_ops);
+		register_smp_ops(&msp_smtc_smp_ops);
 #endif
+	}
 
 #ifdef CONFIG_PMCTWILED
 	/*