[U-Boot] dfu: make data buffer size configurable

[Heiko Schocher]

Hello Marek,

Am 09.06.2013 22:01, schrieb Marek Vasut:
> Dear Pantelis Antoniou,
> 
>> Heiko,
>>
>> On Jun 4, 2013, at 1:31 PM, Heiko Schocher wrote:
>>> Hello Pantelis,
>>>
>>> Am 04.06.2013 12:08, schrieb Pantelis Antoniou:
>>>> Hi Heiko,
>>>>
>>>> Just thinking out loud here. Can we have an extra option that
>>>> allocates the buffer dynamically based on an env variable?
>>>
>>> Hmm.. also a possibility... I have here no preferences ...
>>>
>>> Name: "dfu_data_buf_size" if not defined, or env invalid, use
>>> default CONFIG_SYS_DFU_DATA_BUF_SIZE size?
>>>
>>> But this can be done in a second step, right?
>>
>> Yes, only as a second step please.
> 
> Why not do it like that right away?

Ok, I can change this. Envvar name "dfu_data_buf_size" is ok?

bye,
Heiko
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