Hi, On Mon, Jan 21, 2013 at 07:13:03PM +0800, victor yeo wrote: > >> >> Yes, ep0_complete() is called in UDC driver queue function, i just > >> >> added it in and ep0_complete() is called now. The dmesg output is > >> >> below. > >> > > >> > not in queue function, you should call it when completing. > >> > > >> > >> Is there any mistake in my understanding of ep0 setup data processing? > >> > >> 1. usb gadget HW IRQ is triggered if ep0 receives data > >> 2. fsg_setup() is called > >> 3. ep0_queue() is called > >> 4. UDC driver queue function is called > >> 5. UDC driver sends data to ep0 HW buffer > >> 6. UDC driver increments req->actual by the amount of transferred bytes > >> 7. UDC driver call ep0_complete() > > > > looks correct > > > > Some progress, now i am able to see the dump_msg from ep0_complete(). > It looks like the enumeration is ok, but the SCSI Inquiry command is > not received by the UDC driver. The do_scsi_command() in > fsg_main_thread() is not called. Is this another bug in my UDC driver? I would believe so since so many other controllers work just fine. -- balbi
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