From 75db00eea03d5b892c4e69ab17891fca968187d3 Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Thu, 21 Dec 2017 13:51:46 +0900
Subject: [PATCH] linux/kernel.h: Add ALIGN_DOWN macro

Follow Linux commit ed067d4a859f ("linux/kernel.h: Add ALIGN_DOWN
macro").

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
 include/linux/kernel.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 87d2d9554d..04a09eb4f6 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -38,6 +38,7 @@
 #define REPEAT_BYTE(x)	((~0ul / 0xff) * (x))
 
 #define ALIGN(x,a)		__ALIGN_MASK((x),(typeof(x))(a)-1)
+#define ALIGN_DOWN(x, a)	ALIGN((x) - ((a) - 1), (a))
 #define __ALIGN_MASK(x,mask)	(((x)+(mask))&~(mask))
 #define PTR_ALIGN(p, a)		((typeof(p))ALIGN((unsigned long)(p), (a)))
 #define IS_ALIGNED(x, a)		(((x) & ((typeof(x))(a) - 1)) == 0)
-- 
2.39.5