diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h
index a7e457ed27c31e1185ebe3a0eaa745d88c35029d..58b8b84adcd2cf5f295e6869b68350f9dcadc798 100644
--- a/arch/arm/include/asm/topology.h
+++ b/arch/arm/include/asm/topology.h
@@ -25,7 +25,7 @@ extern struct cputopo_arm cpu_topology[NR_CPUS];
 
 void init_cpu_topology(void);
 void store_cpu_topology(unsigned int cpuid);
-const struct cpumask *cpu_coregroup_mask(unsigned int cpu);
+const struct cpumask *cpu_coregroup_mask(int cpu);
 
 #else
 
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 1040c00405d0f362916c77030249fff754eda5e8..8200deaa14f680b553bdea41652fac0aaa58e23a 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -43,7 +43,7 @@
 
 struct cputopo_arm cpu_topology[NR_CPUS];
 
-const struct cpumask *cpu_coregroup_mask(unsigned int cpu)
+const struct cpumask *cpu_coregroup_mask(int cpu)
 {
 	return &cpu_topology[cpu].core_sibling;
 }