yaffs: Improve debug chunk erased checking, change refreshPeriod

[yaffs2.git] / yaffs_ecc.h

diff --git a/yaffs_ecc.h b/yaffs_ecc.h
index 5f026a09a0f208a420e0d06a2f8b49648a7421ba..a1ee69ac7f2415e721fd0e2d55fbe198d7c87911 100644 (file)
--- a/yaffs_ecc.h
+++ b/yaffs_ecc.h
@@ -1,27 +1,27 @@
 /*
- * YAFFS: Yet another FFS. A NAND-flash specific file system. 
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
  *
- * yaffs_ecc.c: ECC generation/correction algorithms.
- *
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002-2010 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
  *
  * Created by Charles Manning <charles@aleph1.co.uk>
  *
  * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
  * published by the Free Software Foundation.
  *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  */
 
- /*
-  * This code implements the ECC algorithm used in SmartMedia.
-  *
-  * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. 
-  * The two unused bit are set to 1.
-  * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC 
-  * blocks are used on a 512-byte NAND page.
-  *
-  */
+/*
+ * This code implements the ECC algorithm used in SmartMedia.
+ *
+ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
+ * The two unused bit are set to 1.
+ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
+ * blocks are used on a 512-byte NAND page.
+ *
+ */
 
 #ifndef __YAFFS_ECC_H__
 #define __YAFFS_ECC_H__
@@ -34,11 +34,11 @@ typedef struct {
 
 void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
 int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
-                    const unsigned char *test_ecc);
+               const unsigned char *test_ecc);
 
 void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
-                            yaffs_ECCOther * ecc);
+                       yaffs_ECCOther *ecc);
 int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
-                         yaffs_ECCOther * read_ecc,
-                         const yaffs_ECCOther * test_ecc);
+                       yaffs_ECCOther *read_ecc,
+                       const yaffs_ECCOther *test_ecc);
 #endif