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author | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:17 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:17 +0000 |
commit | 449f88df0f02fea3a7206d44daf62a553f9e819e (patch) | |
tree | ffd5be768cbfd686f28bba684734db5b9faf0829 /target/linux/generic/files/fs/yaffs2/yaffs_ecc.c | |
parent | 56190ed0fcdb453b218be4fcefa938850a81c83e (diff) | |
download | master-31e0f0ae-449f88df0f02fea3a7206d44daf62a553f9e819e.tar.gz master-31e0f0ae-449f88df0f02fea3a7206d44daf62a553f9e819e.tar.bz2 master-31e0f0ae-449f88df0f02fea3a7206d44daf62a553f9e819e.zip |
generic: fold yaffs_git_2010_10_20 patch to generic/files
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 34013
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_ecc.c')
-rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_ecc.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c index d037e90a24..4030908d51 100644 --- 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; |