linux-kernel - [PATCH 4.16 251/279] mtd: Fix comparison in map_word

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Message-Id: <20180618080619.138631918@linuxfoundation.org>
Date:   Mon, 18 Jun 2018 10:13:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ben Hutchings <ben@...adent.org.uk>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 251/279] mtd: Fix comparison in map_word_andequal()

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

[ Upstream commit ea739a287f4f16d6250bea779a1026ead79695f2 ]

Commit 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
changed map_word_andequal() into a macro, but also changed the right
hand side of the comparison from val3 to val2.  Change it back to use
val3 on the right hand side.

Thankfully this did not cause a regression because all callers
currently pass the same argument for val2 and val3.

Fixes: 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Boris Brezillon <boris.brezillon@...tlin.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/mtd/map.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -312,7 +312,7 @@ void map_destroy(struct mtd_info *mtd);
 ({									\
 	int i, ret = 1;							\
 	for (i = 0; i < map_words(map); i++) {				\
-		if (((val1).x[i] & (val2).x[i]) != (val2).x[i]) {	\
+		if (((val1).x[i] & (val2).x[i]) != (val3).x[i]) {	\
 			ret = 0;					\
 			break;						\
 		}							\