[U-Boot] dfu download issue with ci_udc

[S Durga Prasad Paladugu]

Hi,

I am trying to download the file from dfu-utilities(version 0.7) and using
the ci_udc at device side. After all the data was sent from the host, the
dfu utilities sent the zpl packet but at the device side the dfu_write is
not getting invoked for zero packet length and hence causing the data not
to be copied to actual interface(ram/mmc/nand). I pasted here the debug log
for the zpl for reference.


*handle setup CLEAR_FEATURE, 21, 1 index 0 value 3 length 0*
*handle_setup: Set ep0 to OUT for Data Stage*
*handle_setup: 0 length: flip ep0 dir for Status Stage*
*flip_ep0_direction: Flipping ep0 to IN*
*non-core control req21.01 v0003 i0000 l0*
*w_value: 0x3 len: 0x0*
*req_type: 0x20 ctrl->bRequest: 0x1 f_dfu->dfu_state: 0x5*
*ept0 in pre-queue req 3f5284a8, buffer 3f528580*
*ept0 in queue len 0, req 3f5284a8, buffer 3f528580*
*ept0 in req 3f5284a8, complete 0*


 My question here is does any one has tested the dfu download using ci_udc
and what could be reason for this behavior?

Regards,
DP