diff --git a/sys/compat/linuxkpi/common/include/linux/pm.h b/sys/compat/linuxkpi/common/include/linux/pm.h
index eb3316088787..74f0d330f505 100644
--- a/sys/compat/linuxkpi/common/include/linux/pm.h
+++ b/sys/compat/linuxkpi/common/include/linux/pm.h
@@ -1,82 +1,94 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2020 The FreeBSD Foundation
  *
  * This software was developed by Björn Zeeb under sponsorship from
  * the FreeBSD Foundation.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 
 #ifndef	_LINUXKPI_LINUX_PM_H
 #define	_LINUXKPI_LINUX_PM_H
 
+#include <linux/kernel.h>	/* pr_debug */
+#include <asm/atomic.h>
+
 /* Needed but breaks linux_usb.c */
 /* #include <linux/completion.h> */
 /* #include <linux/wait.h> */
 
+struct device;
+
 typedef struct pm_message {
 	int event;
 } pm_message_t;
 
 struct dev_pm_domain {
 };
 
 #define	PM_EVENT_FREEZE		0x0001
 #define	PM_EVENT_SUSPEND	0x0002
 
 #define	pm_sleep_ptr(_p)					\
     IS_ENABLED(CONFIG_PM_SLEEP) ? (_p) : NULL
 
 #ifdef CONFIG_PM_SLEEP
 #define	SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc)	\
 const struct dev_pm_ops _name = {				\
 	.suspend	= _suspendfunc,		\
 	.resume		= _resumefunc,		\
 	.freeze		= _suspendfunc,		\
 	.thaw		= _resumefunc,		\
 	.poweroff	= _suspendfunc,		\
 	.restore	= _resumefunc,		\
 }
 
 #define	DEFINE_SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc) \
 const struct dev_pm_ops _name = {				\
 	.suspend	= _suspendfunc,		\
 	.resume		= _resumefunc,		\
 	.freeze		= _suspendfunc,		\
 	.thaw		= _resumefunc,		\
 	.poweroff	= _suspendfunc,		\
 	.restore	= _resumefunc,		\
 }
 #else
 #define	SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc)	\
 const struct dev_pm_ops _name = {				\
 }
 #define	DEFINE_SIMPLE_DEV_PM_OPS(_name, _suspendfunc, _resumefunc) \
 const struct dev_pm_ops _name = {				\
 }
 #endif
 
+static inline void
+pm_wakeup_event(struct device *dev __unused, unsigned int x __unused)
+{
+
+	pr_debug("%s: TODO\n", __func__);
+}
+
 #endif	/* _LINUXKPI_LINUX_PM_H */