diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7343.c b/arch/sh/kernel/cpu/sh4a/setup-sh7343.c
index 91d61cf91ba1..c0a3f079dfdc 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7343.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7343.c
@@ -41,3 +41,7 @@ static int __init sh7343_devices_setup(void)
 				    ARRAY_SIZE(sh7343_devices));
 }
 __initcall(sh7343_devices_setup);
+
+void __init plat_irq_setup(void)
+{
+}
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7770.c b/arch/sh/kernel/cpu/sh4a/setup-sh7770.c
index 6a04cc5f5aca..32f4f59a837b 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7770.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7770.c
@@ -51,3 +51,7 @@ static int __init sh7770_devices_setup(void)
 				    ARRAY_SIZE(sh7770_devices));
 }
 __initcall(sh7770_devices_setup);
+
+void __init plat_irq_setup(void)
+{
+}