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| author | Jörn Engel <joern@logfs.org> | 2007-10-20 23:16:32 +0200 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-10-20 22:30:54 +0100 |
| commit | eb684507159de2162cd6fc62f2b3a671afd5a61d (patch) | |
| tree | 18bdc17456ef9af6ed85f1d08a735d8fe911d852 | |
| parent | 1dd7fdb163645f453f5ae55686511b6fcc2314cd (diff) | |
| download | lwn-eb684507159de2162cd6fc62f2b3a671afd5a61d.tar.gz lwn-eb684507159de2162cd6fc62f2b3a671afd5a61d.zip | |
[MTD] [NAND] Replace -1 with -EBADMSG in nand error correction code
Magic numerical values are just bad style. Particularly so when
undocumented.
Signed-off-by: Jörn Engel <joern@logfs.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| -rw-r--r-- | drivers/mtd/nand/diskonchip.c | 4 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_ecc.c | 2 | ||||
| -rw-r--r-- | lib/reed_solomon/decode_rs.c | 2 | ||||
| -rw-r--r-- | lib/reed_solomon/reed_solomon.c | 2 |
4 files changed, 6 insertions, 4 deletions
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index ab9f5c5db38d..0e72153b3297 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -220,7 +220,7 @@ static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc) } } /* If the parity is wrong, no rescue possible */ - return parity ? -1 : nerr; + return parity ? -EBADMSG : nerr; } static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) @@ -1034,7 +1034,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); else WriteDOC(DOC_ECC_DIS, docptr, ECCConf); - if (no_ecc_failures && (ret == -1)) { + if (no_ecc_failures && (ret == -EBADMSG)) { printk(KERN_ERR "suppressing ECC failure\n"); ret = 0; } diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c index fde593e5e634..9003a135e050 100644 --- a/drivers/mtd/nand/nand_ecc.c +++ b/drivers/mtd/nand/nand_ecc.c @@ -189,7 +189,7 @@ int nand_correct_data(struct mtd_info *mtd, u_char *dat, if(countbits(s0 | ((uint32_t)s1 << 8) | ((uint32_t)s2 <<16)) == 1) return 1; - return -1; + return -EBADMSG; } EXPORT_SYMBOL(nand_correct_data); diff --git a/lib/reed_solomon/decode_rs.c b/lib/reed_solomon/decode_rs.c index 65bc718f0dc0..0ec3f257ffdf 100644 --- a/lib/reed_solomon/decode_rs.c +++ b/lib/reed_solomon/decode_rs.c @@ -202,7 +202,7 @@ * deg(lambda) unequal to number of roots => uncorrectable * error detected */ - count = -1; + count = -EBADMSG; goto finish; } /* diff --git a/lib/reed_solomon/reed_solomon.c b/lib/reed_solomon/reed_solomon.c index 5b0d8522b7ca..3ea2db94d5b0 100644 --- a/lib/reed_solomon/reed_solomon.c +++ b/lib/reed_solomon/reed_solomon.c @@ -320,6 +320,7 @@ EXPORT_SYMBOL_GPL(encode_rs8); * The syndrome and parity uses a uint16_t data type to enable * symbol size > 8. The calling code must take care of decoding of the * syndrome result and the received parity before calling this code. + * Returns the number of corrected bits or -EBADMSG for uncorrectable errors. */ int decode_rs8(struct rs_control *rs, uint8_t *data, uint16_t *par, int len, uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk, @@ -363,6 +364,7 @@ EXPORT_SYMBOL_GPL(encode_rs16); * @corr: buffer to store correction bitmask on eras_pos * * Each field in the data array contains up to symbol size bits of valid data. + * Returns the number of corrected bits or -EBADMSG for uncorrectable errors. */ int decode_rs16(struct rs_control *rs, uint16_t *data, uint16_t *par, int len, uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk, |