From: Roger Pau Monne <roger.pau@citrix.com>
Date: Mon, 2 Jun 2014 15:08:12 +0000 (+0200)
Subject: libxc: remove broken endianess gate on lz4 decompressor
X-Git-Tag: 4.5.0-rc1~664
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=fbcc8b292638c07fa114fc904baf0e59a642e7ba;p=xen.git

libxc: remove broken endianess gate on lz4 decompressor

The lz4 decompressor had wrongly implemented a gate between
little-endian and big-endian versions of get_unaligned_le{16/32},
which turns out to be broken on all architectures supported by Xen,
because __LITTLE_ENDIAN is not defined. Instead of trying to fix
this, just implement the little-endian version and remove the switch.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/tools/libxc/xc_dom_decompress_lz4.c b/tools/libxc/xc_dom_decompress_lz4.c
index 08272fe41f..490ec56206 100644
--- a/tools/libxc/xc_dom_decompress_lz4.c
+++ b/tools/libxc/xc_dom_decompress_lz4.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <inttypes.h>
-#include <endian.h>
 #include <stdint.h>
 
 #include "xg_private.h"
diff --git a/xen/common/lz4/defs.h b/xen/common/lz4/defs.h
index f46df0884e..d886a4e122 100644
--- a/xen/common/lz4/defs.h
+++ b/xen/common/lz4/defs.h
@@ -12,7 +12,6 @@
 #include <asm/byteorder.h>
 #endif
 
-#ifdef __LITTLE_ENDIAN
 static inline u16 INIT get_unaligned_le16(const void *p)
 {
 	return le16_to_cpup(p);
@@ -22,19 +21,6 @@ static inline u32 INIT get_unaligned_le32(const void *p)
 {
 	return le32_to_cpup(p);
 }
-#else
-#include <asm/unaligned.h>
-
-static inline u16 INIT get_unaligned_le16(const void *p)
-{
-	return le16_to_cpu(__get_unaligned(p, 2));
-}
-
-static inline u32 INIT get_unaligned_le32(void *p)
-{
-	return le32_to_cpu(__get_unaligned(p, 4));
-}
-#endif
 
 /*
  * Detects 64 bits mode