Re: [PATCH v7 1/7] mtd: spi-nor: sst: fix BPn bits for the SST25VF064C

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On 12/3/20 1:00 AM, Michael Walle wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> This flash part actually has 4 block protection bits.
> 
> Reported-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # v5.7+

While the patch is correct according to the datasheet, it was
not tested, so it's not a candidate for stable. I would update
the commit message to indicate that the the patch was made
solely on datasheet info and not tested, I would add the fixes
tag, and strip cc-ing to stable.

> Signed-off-by: Michael Walle <michael@xxxxxxxx>

With the above addressed:

Reviewed-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>

> ---
> I didn't add the Fixes: tag because we depend on the 4bit BP support which
> was introduced in 5.7.
> 
> changes since v6:
>  - new patch
> 
>  drivers/mtd/spi-nor/sst.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/spi-nor/sst.c b/drivers/mtd/spi-nor/sst.c
> index e0af6d25d573..0ab07624fb73 100644
> --- a/drivers/mtd/spi-nor/sst.c
> +++ b/drivers/mtd/spi-nor/sst.c
> @@ -18,7 +18,8 @@ static const struct flash_info sst_parts[] = {
>                               SECT_4K | SST_WRITE) },
>         { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64,
>                               SECT_4K | SST_WRITE) },
> -       { "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128, SECT_4K) },
> +       { "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128,
> +                             SECT_4K | SPI_NOR_4BIT_BP) },
>         { "sst25wf512",  INFO(0xbf2501, 0, 64 * 1024,  1,
>                               SECT_4K | SST_WRITE) },
>         { "sst25wf010",  INFO(0xbf2502, 0, 64 * 1024,  2,
> --
> 2.20.1
> 





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