diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index cbf97e648d19..d1ddf5575973 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -141,7 +141,7 @@ acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
 {}
 #endif
 
-static inline const char *acpi_get_enable_method(int cpu)
+static __always_inline const char *acpi_get_enable_method(int cpu)
 {
 	if (acpi_psci_present())
 		return "psci";