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Subject[PATCH 1/2] firmware: arm_scmi: Add include guard to linux/scmi_protocol.h
Date
If this header is include twice, it will generate loads of compile
time error with the following below error pattern. It was reported by
0day kbuild robot on a branch pushed with double inclusion by accident.

error: conflicting types for ‘...’
note: previous declaration of ‘...’ was here
error: redefinition of ‘...’

Add a header include guard just in case.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
include/linux/scmi_protocol.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index 5c873a59b387..ce2f5c28b2df 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -4,6 +4,10 @@
*
* Copyright (C) 2018 ARM Ltd.
*/
+
+#ifndef _LINUX_SCMI_PROTOCOL_H
+#define _LINUX_SCMI_PROTOCOL_H
+
#include <linux/device.h>
#include <linux/types.h>

@@ -319,3 +323,5 @@ static inline void scmi_driver_unregister(struct scmi_driver *driver) {}
typedef int (*scmi_prot_init_fn_t)(struct scmi_handle *);
int scmi_protocol_register(int protocol_id, scmi_prot_init_fn_t fn);
void scmi_protocol_unregister(int protocol_id);
+
+#endif /* _LINUX_SCMI_PROTOCOL_H */
--
2.17.1
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