Index: sys/compat/linuxkpi/common/include/linux/suspend.h
===================================================================
--- sys/compat/linuxkpi/common/include/linux/suspend.h
+++ sys/compat/linuxkpi/common/include/linux/suspend.h
@@ -3,6 +3,13 @@
 #ifndef _LINUXKPI_LINUX_SUSPEND_H_
 #define _LINUXKPI_LINUX_SUSPEND_H_
 
+typedef int suspend_state_t;
+
+extern suspend_state_t pm_suspend_target_state;
+
+#define	PM_SUSPEND_ON		0
+#define	PM_SUSPEND_TO_IDLE	1
+
 static inline int
 pm_suspend_via_firmware()
 {
Index: sys/compat/linuxkpi/common/src/linux_acpi.c
===================================================================
--- sys/compat/linuxkpi/common/src/linux_acpi.c
+++ sys/compat/linuxkpi/common/src/linux_acpi.c
@@ -40,6 +40,7 @@
 #include <dev/acpica/acpivar.h>
 
 #include <linux/notifier.h>
+#include <linux/suspend.h>
 
 #include <acpi/acpi_bus.h>
 #include <acpi/video.h>
@@ -58,6 +59,8 @@
 
 #ifdef DEV_ACPI
 
+suspend_state_t pm_suspend_target_state = PM_SUSPEND_ON;
+
 static uint32_t linux_acpi_target_sleep_state = ACPI_STATE_S0;
 
 static eventhandler_tag resume_tag;