X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_ecc.c;h=71ebe765c9d29bd40056d28097128045fd3f3503;hp=d037e90a2472c39b032096dd344b5f0f86e9ce97;hb=70c6bf2ff57c8a2fb778accdd5b4227abf273674;hpb=3e5718ec7f0df7b76837d10583419b745cb27474 diff --git a/yaffs_ecc.c b/yaffs_ecc.c index d037e90..71ebe76 100644 --- a/yaffs_ecc.c +++ b/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 @@ -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 nBytes, yaffs_ECCOther *eccOther) { unsigned int i; @@ -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 nBytes, yaffs_ECCOther *read_ecc, const yaffs_ECCOther *test_ecc) { @@ -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;