From: Li zeming <zeming@nfschina.com>
To: benh@kernel.crashing.org
Cc: kernel@nfschina.com, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org, Li zeming <zeming@nfschina.com>
Subject: [PATCH] macintosh/windfarm_pid: Add header file macro definition
Date: Thu, 7 Jul 2022 09:59:49 +0800 [thread overview]
Message-ID: <20220707015949.3733-1-zeming@nfschina.com> (raw)
I think the header file could avoid redefinition errors.
at compile time by adding macro definitions.
Signed-off-by: Li zeming <zeming@nfschina.com>
---
drivers/macintosh/windfarm_pid.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/macintosh/windfarm_pid.h b/drivers/macintosh/windfarm_pid.h
index 83f747dbeafc..9882e90a5071 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 +85,4 @@ 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
--
2.18.2
next reply other threads:[~2022-07-07 2:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-07 1:59 Li zeming [this message]
2022-11-30 9:23 ` [PATCH] macintosh/windfarm_pid: Add header file macro definition Michael Ellerman
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