generic: fold yaffs_git_2010_10_20 patch to generic/files

[15.05/openwrt.git] / target / linux / generic / files / fs / yaffs2 / yaffs_ecc.c

diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
index d037e90..4030908 100644 (file)
--- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
@@ -1,7 +1,7 @@
 /*
  * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
  *
- * Copyright (C) 2002-2007 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>
@@ -28,9 +28,6 @@
  * this bytes influence on the line parity.
  */
 
-const char *yaffs_ecc_c_version =
-       "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $";
-
 #include "yportenv.h"
 
 #include "yaffs_ecc.h"
@@ -72,7 +69,7 @@ static const unsigned char column_parity_table[] = {
 
 /* Count the bits in an unsigned char or a U32 */
 
-static int yaffs_CountBits(unsigned char x)
+static int yaffs_count_bits(unsigned char x)
 {
        int r = 0;
        while (x) {
@@ -83,7 +80,7 @@ static int yaffs_CountBits(unsigned char x)
        return r;
 }
 
-static int yaffs_CountBits32(unsigned x)
+static int yaffs_count_bits32(unsigned x)
 {
        int r = 0;
        while (x) {
@@ -95,7 +92,7 @@ static int yaffs_CountBits32(unsigned x)
 }
 
 /* Calculate the ECC for a 256-byte block of data */
-void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
+void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
 {
        unsigned int i;
 
@@ -166,7 +163,7 @@ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
 
 /* Correct the ECC on a 256 byte block of data */
 
-int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
+int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
                     const unsigned char *test_ecc)
 {
        unsigned char d0, d1, d2;       /* deltas */
@@ -226,9 +223,9 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
                return 1; /* Corrected the error */
        }
 
-       if ((yaffs_CountBits(d0) +
-            yaffs_CountBits(d1) +
-            yaffs_CountBits(d2)) ==  1) {
+       if ((yaffs_count_bits(d0) +
+            yaffs_count_bits(d1) +
+            yaffs_count_bits(d2)) ==  1) {
                /* Reccoverable error in ecc */
 
                read_ecc[0] = test_ecc[0];
@@ -248,7 +245,7 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
 /*
  * ECCxxxOther does ECC calcs on arbitrary n bytes of data
  */
-void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
+void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
                                yaffs_ECCOther *eccOther)
 {
        unsigned int i;
@@ -258,7 +255,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
        unsigned line_parity_prime = 0;
        unsigned char b;
 
-       for (i = 0; i < nBytes; i++) {
+       for (i = 0; i < n_bytes; i++) {
                b = column_parity_table[*data++];
                col_parity ^= b;
 
@@ -275,7 +272,7 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
        eccOther->lineParityPrime = line_parity_prime;
 }
 
-int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
+int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
                        yaffs_ECCOther *read_ecc,
                        const yaffs_ECCOther *test_ecc)
 {
@@ -304,7 +301,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
                if (cDelta & 0x02)
                        bit |= 0x01;
 
-               if (lDelta >= nBytes)
+               if (lDelta >= n_bytes)
                        return -1;
 
                data[lDelta] ^= (1 << bit);
@@ -312,8 +309,8 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
                return 1; /* corrected */
        }
 
-       if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
-                       yaffs_CountBits(cDelta)) == 1) {
+       if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) +
+                       yaffs_count_bits(cDelta)) == 1) {
                /* Reccoverable error in ecc */
 
                *read_ecc = *test_ecc;