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-rw-r--r--arch/i386/kernel/acpi/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index ee75cb286cf..5e291a20c03 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -2,3 +2,7 @@ obj-$(CONFIG_ACPI_BOOT) := boot.o
obj-$(CONFIG_X86_IO_APIC) += earlyquirk.o
obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o
+ifneq ($(CONFIG_ACPI_PROCESSOR),)
+obj-y += cstate.o
+endif
+