From 153a716d3b79ab3486fa4f48559eb398aa82082c Mon Sep 17 00:00:00 2001
From: Andrey Panin <pazke@donpac.ru>
Date: Sat, 26 Jun 2004 20:59:38 -0700
Subject: [PATCH] crc: add common CRC16 module

Currently we have 8 copies of CRC16 calculation table in different device
drivers, this patch creates common crc16.c module to replace them.

Signed-off-by: Andrey Panin <pazke@donpac.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 include/linux/crc16.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 include/linux/crc16.h

(limited to 'include/linux')

diff --git a/include/linux/crc16.h b/include/linux/crc16.h
new file mode 100644
index 000000000000..a077021e1c38
--- /dev/null
+++ b/include/linux/crc16.h
@@ -0,0 +1,15 @@
+#ifndef _LINUX_CRC16_H
+#define _LINUX_CRC16_H
+
+#include <linux/types.h>
+
+extern u16 const crc16_table[256];
+
+extern u16 crc16(u16 crc, const u8 *buffer, size_t len);
+
+static inline u16 crc16_byte(u16 crc, const u8 c)
+{
+	return (crc >> 8) ^ crc16_table[(crc ^ c) & 0xff];
+}
+
+#endif /* _LINUX_CRC16_H */
-- 
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