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rslib: Update documentation

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The decoder returns the number of corrected symbols, not bits.
The caller provided syndrome must be in index form.

Signed-off-by: Ferdinand Blomqvist <ferdinand.blomqvist@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190620141039.9874-7-ferdinand.blomqvist@gmail.com
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Ferdinand Blomqvist 2019-06-20 17:10:38 +03:00 committed by Thomas Gleixner
parent ef4d6a8556
commit 38cbae1434
1 changed files with 8 additions and 4 deletions
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12
lib/reed_solomon/reed_solomon.c
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@ -340,7 +340,8 @@ EXPORT_SYMBOL_GPL(encode_rs8);
* @data: data field of a given type
* @par: received parity data field
* @len: data length
* @s: syndrome data field (if NULL, syndrome is calculated)
* @s: syndrome data field, must be in index form
* (if NULL, syndrome is calculated)
* @no_eras: number of erasures
* @eras_pos: position of erasures, can be NULL
* @invmsk: invert data mask (will be xored on data, not on parity!)
@ -354,7 +355,8 @@ EXPORT_SYMBOL_GPL(encode_rs8);
* decoding, so the caller has to ensure that decoder invocations are
* serialized.
*
* Returns the number of corrected bits or -EBADMSG for uncorrectable errors.
* Returns the number of corrected symbols or -EBADMSG for uncorrectable
* errors. The count includes errors in the parity.
*/
int decode_rs8(struct rs_control *rsc, uint8_t *data, uint16_t *par, int len,
uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
@ -391,7 +393,8 @@ EXPORT_SYMBOL_GPL(encode_rs16);
* @data: data field of a given type
* @par: received parity data field
* @len: data length
* @s: syndrome data field (if NULL, syndrome is calculated)
* @s: syndrome data field, must be in index form
* (if NULL, syndrome is calculated)
* @no_eras: number of erasures
* @eras_pos: position of erasures, can be NULL
* @invmsk: invert data mask (will be xored on data, not on parity!)
@ -403,7 +406,8 @@ EXPORT_SYMBOL_GPL(encode_rs16);
* decoding, so the caller has to ensure that decoder invocations are
* serialized.
*
* Returns the number of corrected bits or -EBADMSG for uncorrectable errors.
* Returns the number of corrected symbols or -EBADMSG for uncorrectable
* errors. The count includes errors in the parity.
*/
int decode_rs16(struct rs_control *rsc, uint16_t *data, uint16_t *par, int len,
uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,