From e3e528d29d13c01289f382a0d3ddb5312ac3dae3 Mon Sep 17 00:00:00 2001 From: Li zeming Date: Thu, 7 Jul 2022 09:59:49 +0800 Subject: [PATCH] macintosh/windfarm_pid: Add header file macro definition I think the header file could avoid redefinition errors at compile time by adding macro definitions. Signed-off-by: Li zeming [mpe: Add endif comment] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220707015949.3733-1-zeming@nfschina.com --- drivers/macintosh/windfarm_pid.h | 5 +++++ 1 file changed, 5 insertions(+) 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 */