[U-Boot] [RFC PATCH] usb: dfu: make nand upload working

[Bo Shen <voice.shen@atmel.com>]

Hi Lukasz Majewski,

On 10/13/2013 05:19, Lukasz Majewski wrote:
> On Sat, 12 Oct 2013 15:47:14 +0800
> Bo Shen <voice.shen@atmel.com> wrote:
>
>> If won't pass value to dfu->r_left, it always 0, make no transfer,
>> the dfu-util on host side report failed. So, before starting transfer,
>> pass the value, then nand uploading can work.
>>
>> Signed-off-by: Bo Shen <voice.shen@atmel.com>
>>
>> ---
>>   drivers/dfu/dfu.c |    1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
>> index 56b21c7..3c3ad1b 100644
>> --- a/drivers/dfu/dfu.c
>> +++ b/drivers/dfu/dfu.c
>> @@ -274,6 +274,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf,
>> int size, int blk_seq_num) if (dfu->i_buf_start == NULL)
>>   			return -ENOMEM;
>>
>> +		dfu->r_left = dfu->data.nand.size;
>
> Please do not add nand related code to "generic" DFU code. This can
> damage DFU operation with other memories (like eMMC).
>
> Such code shall be added to dfu_nand.c file.

Thanks for point out this.
I will check it.

>>   		ret = dfu->read_medium(dfu, 0, dfu->i_buf_start,
>> &dfu->r_left); if (ret != 0) {
>>   			debug("%s: failed to get r_left\n",
>> __func__);
>
> Best regards,
>
> Lukasz Majewski
>

Best Regards,
Bo Shen