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-rw-r--r--include/asm-x86_64/proto.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index 115e496c613..d35c7e06f34 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -42,7 +42,11 @@ extern void iommu_hole_init(void);
extern void time_init_gtod(void);
extern int pmtimer_mark_offset(void);
extern unsigned int do_gettimeoffset_pm(void);
+#ifdef CONFIG_X86_PM_TIMER
extern u32 pmtmr_ioport;
+#else
+#define pmtmr_ioport 0
+#endif
extern unsigned long long monotonic_base;
extern int sysctl_vsyscall;