[PATCH v3 1/4] initrd: Add the preprocessor guard in initrd.h

[Kefeng Wang]

Add the preprocessor guard in initrd.h to prevent possible
build error from the multiple inclusion of same header file
multiple time.

Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
 include/linux/initrd.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/initrd.h b/include/linux/initrd.h
index 8db6f8c8030b..fc30ac30e10e 100644
--- a/include/linux/initrd.h
+++ b/include/linux/initrd.h
@@ -1,5 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 
+#ifndef __LINUX_INITRD_H
+#define __LINUX_INITRD_H
+
 #define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
 
 /* starting block # of image */
@@ -24,3 +27,5 @@ extern char __initramfs_start[];
 extern unsigned long __initramfs_size;
 
 void console_on_rootfs(void);
+
+#endif /* __LINUX_INITRD_H */
-- 
2.26.2