linux-kernel - [PATCH] lib : lz4 using put_unaligned_le16 instead of put

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Date:	Tue, 22 Jul 2014 02:03:23 +0000 (GMT)
From:	Eunbong Song <eunb.song@...sung.com>
To:	gregkh@...uxfoundation.org
Cc:	chanho.min@....com, linux-kernel@...r.kernel.org
Subject: [PATCH] lib : lz4 using put_unaligned_le16 instead of put_unaligned

In case of mips bigendian machine, put_unaligned writes bigendian bytes order. 
This is defined in arch/mips/include/asm/unaligned.h. So it's right use put_unaligned_le16 function instead of put_unaligned.
This patch also fixes problem fail to mount zram ext4 partition with "zram: Decompression failed! err=-1, page=0" in mips bigendian machine.

Signed-off-by: Eunbong Song <eunb.song@...sung.com>
---
 lib/lz4/lz4defs.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h
index abcecdc..dc7ef14 100644
--- a/lib/lz4/lz4defs.h
+++ b/lib/lz4/lz4defs.h
@@ -53,7 +53,7 @@ typedef struct _U64_S { u64 v; } U64_S;

 #define LZ4_WRITE_LITTLEENDIAN_16(p, v)	\
 	do {	\
-		put_unaligned(v, (u16 *)(p)); \
+		put_unaligned_le16(v, (u16 *)(p)); \
 		p += 2; \
 	} while (0)
 #endif
-- 
1.7.0.1