mtd: nand: omap: ecc.correct: omap_elm_correct_data: fix programmed-page bit-flip correction logic
This patch updates following checks when bit-flips are detected by ELM:
- Do not evaluate bit-flips when un-correctable bit-flips is reported by ELM,
because as per [1] when ELM reports an un-correctable bit-flips,
'number of error' field in its ELM_LOCATION_STATUS register is also invalid.
- Return with error-code '-EBADMSG' on detection of un-correctable bit-flip.
- Return with error-code '-EBADMSG' when bit-flips position is outside current
Sector and OOB area.
[1] ELM IP spec Table-25 ELM_LOCATION_STATUS Register.
ELM_LOCATION_STATUS[8] = ECC_CORRECTABLE: Error location process exit status
0x0: ECC error location process failed.
Number of errors and error locations are invalid.
0x1: all errors were successfully located.
Number of errors and error locations are valid.
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
1 file changed