[U-Boot] [PATCH v1 6/7] dfu, nand, ubi: fix erasing after write finish

[Heiko Schocher]

Hello Scott,

Am 25.05.2016 um 07:33 schrieb Scott Wood:
> On 05/25/2016 12:07 AM, Heiko Schocher wrote:
>> writting to ubi nand partitions need after write ends an erase
>> of the remaining sectors. This fail, if dfu write size was not
>> a multiple of erasesize, example log:
>>
>> Failure erase: -1
>>
>> Fix this error.
>>
>> Signed-off-by: Heiko Schocher <hs at denx.de>
>
> Why don't you just erase the whole partition up front?

Good question ... I think the reason is that if we erase a big partition
at once on dfu start, dfu-util rans into timeout ... but may I am wrong ...

IIRC at the end of a DFU transfer DFU protocol sends a "flush" to the
device ... where we currently erase the remaining sectors ... we need
this on an ubi partition, else there may remain old used UBI sectors ...
(BTW: we need an "ubi format" command ...)

@Lukasz? Am I correct? Or could we simple erase before writting?

bye,
Heiko
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