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-rw-r--r--include/acpi/acpi_drivers.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index f85f77a..777d37ae 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -147,6 +147,10 @@ static inline void unregister_hotplug_dock_device(acpi_handle handle)
/*--------------------------------------------------------------------------
Suspend/Resume
-------------------------------------------------------------------------- */
+#ifdef CONFIG_PM_SLEEP
extern int acpi_sleep_init(void);
+#else
+static inline int acpi_sleep_init(void) { return 0; }
+#endif
#endif /*__ACPI_DRIVERS_H__*/
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