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-rw-r--r--arch/x86_64/kernel/time.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 735b676..fb8c809 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -27,7 +27,9 @@
#include <linux/bcd.h>
#include <linux/kallsyms.h>
#include <linux/acpi.h>
+#ifdef CONFIG_ACPI
#include <acpi/achware.h> /* for PM timer frequency */
+#endif
#include <asm/8253pit.h>
#include <asm/pgtable.h>
#include <asm/vsyscall.h>
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