From 0a714b047748769e65fda5467e4766ded8c54800 Mon Sep 17 00:00:00 2001
From: Jeff Mahoney <jeffm@suse.com>
Date: Mon, 26 Aug 2013 10:12:52 -0400
Subject: [PATCH] swab: protect le32_to_cpu and friends against being defined
 twice

When used as part of another project, these macros may already be defined.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
 include/swab.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/swab.h b/include/swab.h
index 945e4e9..319510a 100644
--- a/include/swab.h
+++ b/include/swab.h
@@ -41,6 +41,7 @@
                 (__u64)(((__u64)(__x) & (__u64)0xff00000000000000ULL) >> 56) )); \
 })
 
+#ifndef le32_to_cpu
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 
 # define cpu_to_le16(val)                 (val)
@@ -62,5 +63,6 @@
 #else
 # error "nuxi/pdp-endian archs are not supported"
 #endif
+#endif
 
 #endif /* REISERFS_SWAB_H */