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AM3352: Starterware nandlib question

Part Number: AM3352

Hi, ti team.

   I'm using am3352, when i read nand flash with startware code,  return "NAND_STATUS_READ_ECC_UNCORRECTABLE_ERROR".

  I found that, the function "GPMCBCHECCCheckAndCorrect" in nand_gpmc.c, the param "eccRead" never use at all.

//  function declare

static NandStatus_t GPMCBCHECCCheckAndCorrect(NandInfo_t *nandInfo, unsigned char *eccRead, unsigned char *data);

How the ELM to check and correct data without eccdata?