diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 53a55c8520bf9a1fbab97919457af791f202ca2d..6e83d32071b183dee68fbb8861ecea538d0a40f7 100644
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -148,7 +148,7 @@ static void armada_370_xp_cpu_resume(void)
 }
 
 /* No locking is needed because we only access per-CPU registers */
-void armada_370_xp_pmsu_idle_prepare(bool deepidle)
+static void armada_370_xp_pmsu_idle_prepare(bool deepidle)
 {
 	unsigned int hw_cpu = cpu_logical_map(smp_processor_id());
 	u32 reg;