aboutsummaryrefslogtreecommitdiff
path: root/drivers/macintosh/windfarm_pid.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/macintosh/windfarm_pid.h')
-rw-r--r--drivers/macintosh/windfarm_pid.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/macintosh/windfarm_pid.h b/drivers/macintosh/windfarm_pid.h
index 83f747dbeafc..335613a200fb 100644
--- a/drivers/macintosh/windfarm_pid.h
+++ b/drivers/macintosh/windfarm_pid.h
@@ -1,4 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _WINDFARM_PID_H
+#define _WINDFARM_PID_H
+
/*
* Windfarm PowerMac thermal control. Generic PID helpers
*
@@ -82,3 +85,5 @@ struct wf_cpu_pid_state {
extern void wf_cpu_pid_init(struct wf_cpu_pid_state *st,
struct wf_cpu_pid_param *param);
extern s32 wf_cpu_pid_run(struct wf_cpu_pid_state *st, s32 power, s32 temp);
+
+#endif /* _WINDFARM_PID_H */