1 files changed, 49 insertions, 0 deletions

diff --git a/fs/jfs/endian24.h b/fs/jfs/endian24.h
new file mode 100644
index 000000000000..ab7cd0567c95
--- /dev/null
+++ b/fs/jfs/endian24.h
@@ -0,0 +1,49 @@
+/*
+ *   Copyright (c) International Business Machines Corp., 2001
+ *
+ *   This program is free software;  you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program;  if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef _H_ENDIAN24
+#define _H_ENDIAN24
+
+/*
+ *      endian24.h:
+ *
+ * Endian conversion for 24-byte data
+ *
+ */
+#define __swab24(x) \
+({ \
+        __u32 __x = (x); \
+        ((__u32)( \
+                ((__x & (__u32)0x000000ffUL) << 16) | \
+                 (__x & (__u32)0x0000ff00UL)        | \
+                ((__x & (__u32)0x00ff0000UL) >> 16) )); \
+})
+
+#if (defined(__KERNEL__) && defined(__LITTLE_ENDIAN)) || (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN))
+        #define __cpu_to_le24(x) ((__u32)(x))
+        #define __le24_to_cpu(x) ((__u32)(x))
+#else
+        #define __cpu_to_le24(x) __swab24(x)
+        #define __le24_to_cpu(x) __swab24(x)
+#endif
+
+#ifdef __KERNEL__
+        #define cpu_to_le24 __cpu_to_le24
+        #define le24_to_cpu __le24_to_cpu
+#endif
+
+#endif                          /* !_H_ENDIAN24 */