diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_ecc.c')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_ecc.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c index e2860393d..d037e90a2 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c @@ -29,7 +29,7 @@ */ const char *yaffs_ecc_c_version = - "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $"; + "$Id: yaffs_ecc.c,v 1.11 2009-03-06 17:20:50 wookey Exp $"; #include "yportenv.h" @@ -109,12 +109,10 @@ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) b = column_parity_table[*data++]; col_parity ^= b; - if (b & 0x01) // odd number of bits in the byte - { + if (b & 0x01) { /* odd number of bits in the byte */ line_parity ^= i; line_parity_prime ^= ~i; } - } ecc[2] = (~col_parity) | 0x03; @@ -158,7 +156,7 @@ void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) ecc[0] = ~t; #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER - // Swap the bytes into the wrong order + /* Swap the bytes into the wrong order */ t = ecc[0]; ecc[0] = ecc[1]; ecc[1] = t; @@ -189,7 +187,7 @@ int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, unsigned bit; #ifdef CONFIG_YAFFS_ECC_WRONG_ORDER - // swap the bytes to correct for the wrong order + /* swap the bytes to correct for the wrong order */ unsigned char t; t = d0; @@ -251,7 +249,7 @@ 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, - yaffs_ECCOther * eccOther) + yaffs_ECCOther *eccOther) { unsigned int i; @@ -278,8 +276,8 @@ void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, } 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) { unsigned char cDelta; /* column parity delta */ unsigned lDelta; /* line parity delta */ @@ -294,8 +292,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, return 0; /* no error */ if (lDelta == ~lDeltaPrime && - (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) - { + (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) { /* Single bit (recoverable) error in data */ bit = 0; @@ -307,7 +304,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, if (cDelta & 0x02) bit |= 0x01; - if(lDelta >= nBytes) + if (lDelta >= nBytes) return -1; data[lDelta] ^= (1 << bit); @@ -316,7 +313,7 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, } if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + - yaffs_CountBits(cDelta)) == 1) { + yaffs_CountBits(cDelta)) == 1) { /* Reccoverable error in ecc */ *read_ecc = *test_ecc; @@ -326,6 +323,4 @@ int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, /* Unrecoverable error */ return -1; - } - |