[PATCH 10/11] nand: spi: Add generic SPI controller support

[Richard Weinberger]

Peter,

Am 21.02.2017 um 09:00 schrieb Peter Pan:
> This commit supports to use generic spi controller
> as SPI NAND controller.
> 
> Signed-off-by: Peter Pan <peterpandong at micron.com>

...

> +static void spi_nand_mt29f_ecc_status(struct spi_nand_chip *chip,
> +					unsigned int status,
> +					unsigned int *corrected,
> +					unsigned int *ecc_error)
> +{
> +	unsigned int ecc_status = status & SPI_NAND_MT29F_ECC_MASK;
> +
> +	*ecc_error = (ecc_status == SPI_NAND_MT29F_ECC_UNCORR);
> +	switch (ecc_status) {
> +	case SPI_NAND_MT29F_ECC_0_BIT:
> +		*corrected = 0;
> +		break;
> +	case SPI_NAND_MT29F_ECC_1_3_BIT:
> +		*corrected = 3;
> +		break;
> +	case SPI_NAND_MT29F_ECC_4_6_BIT:
> +		*corrected = 6;
> +		break;
> +	case SPI_NAND_MT29F_ECC_7_8_BIT:
> +		*corrected = 8;
> +		break;
> +	}
> +}

I'm confused. What value will the corrected value be when only 1 bit flipped and got corrected?

Thanks,
//richard