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-rw-r--r--arch/x86/kernel/smpboot.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index dc4fff8fccce..766f092dab80 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -60,6 +60,7 @@
#include <linux/stackprotector.h>
#include <linux/cpuhotplug.h>
#include <linux/mc146818rtc.h>
+#include <linux/acpi.h>
#include <asm/acpi.h>
#include <asm/cacheinfo.h>