Subject: [PATCH] mtd: atmel_nand: make ecc parameters same as definition

From: [email-masked] (Nicolas Ferre)
Date: Thu, 12 Jun 2014 09:26:40 +0200

On 12/06/2014 09:20, Josh Wu :
> Hi, Bo
> 
> On 6/11/2014 11:24 AM, Bo Shen wrote:
>> Hi Josh,
>>
>> On 06/09/2014 06:30 PM, Josh Wu wrote:
>>> Hi, Bo
>>>
>>> Thanks for the patch.
>>>
>>> On 6/6/2014 4:02 PM, Bo Shen wrote:
>>>> If the ecc parameter is not the same as definition, when the
>>>> mtd core check these parameters, it will give the unexpected
>>>> result.
>>> Could you be more specific to tell what kind of result will happened?
>>
>> For example:
>> When try to calculate how many bits can correct in one page according 
>> to the definition, it will give the wrong result.
>>
>> one page correct bits = (mtd->writesize * ecc->strength) / ecc->size;
>>
>> take the following use case as an example:
>> mtd->writesize = 2048 bytes,
>> ecc->strength = 4 bytes, (for 512 bytes)
>>
>> before this patch, the ecc->size = 2048, so the result is 4 bytes.
>>
>> after this patch, the ecc->size = 512, so the result is 16 bytes.
>>
>> The maximum correct bytes is 16 bytes while not 4 bytes. So, if not align
> 
> That is clear enough, thanks. The patch is fine to me. so
> Acked-by: Josh Wu <[email-masked]>

So I advice to add this additional information to the commit message:
Can you send a v2 with enhanced commit message.

Thanks, bye,
-- 
Nicolas Ferre