Hi, >> >> 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? ****below is the debug message from file storage gadget**** g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 01 00 00 40 00 g_file_storage gadget: get device descriptor g_file_storage gadget: ep0-in, length 18: 00000000: 12 01 00 02 00 00 00 40 25 05 a5 a4 33 03 01 02 00000010: 00 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 01 00 00 12 00 g_file_storage gadget: get device descriptor g_file_storage gadget: ep0-in, length 18: 00000000: 12 01 00 02 00 00 00 40 25 05 a5 a4 33 03 01 02 00000010: 00 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 02 00 00 ff 00 g_file_storage gadget: get configuration descriptor g_file_storage gadget: ep0-in, length 32: 00000000: 09 02 20 00 01 01 04 c0 01 09 04 00 00 02 08 06 00000010: 50 05 07 05 81 02 00 02 00 07 05 01 02 00 02 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 03 00 00 ff 00 g_file_storage gadget: ep0-in, length 4: 00000000: 04 03 09 04 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 02 03 09 04 ff 00 g_file_storage gadget: get string descriptor g_file_storage gadget: ep0-in, length 54: 00000000: 36 03 46 00 69 00 6c 00 65 00 2d 00 62 00 61 00 00000010: 63 00 6b 00 65 00 64 00 20 00 53 00 74 00 6f 00 00000020: 72 00 61 00 67 00 65 00 20 00 47 00 61 00 64 00 00000030: 67 00 65 00 74 00 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 01 00 00 12 00 g_file_storage gadget: get device descriptor g_file_storage gadget: ep0-in, length 18: 00000000: 12 01 00 02 00 00 00 40 25 05 a5 a4 33 03 01 02 00000010: 00 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 02 00 00 09 00 g_file_storage gadget: get configuration descriptor g_file_storage gadget: ep0-in, length 9: 00000000: 09 02 20 00 01 01 04 c0 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 00 02 00 00 20 00 g_file_storage gadget: get configuration descriptor g_file_storage gadget: ep0-in, length 32: 00000000: 09 02 20 00 01 01 04 c0 01 09 04 00 00 02 08 06 00000010: 50 05 07 05 81 02 00 02 00 07 05 01 02 00 02 01 g_file_storage gadget: ep0-setup, length 8: 00000000: 00 09 01 00 00 00 00 00 g_file_storage gadget: set configuration g_file_storage gadget: set interface 0 g_file_storage gadget: high-speed config #1 g_file_storage gadget: ep0-setup, length 8: 00000000: a1 fe 00 00 00 00 01 00 g_file_storage gadget: ep0-in, length 1: 00000000: 00 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 01 03 09 04 ff 00 g_file_storage gadget: get string descriptor g_file_storage gadget: ep0-in, length 58: 00000000: 3a 03 4c 00 69 00 6e 00 75 00 78 00 20 00 33 00 00000010: 2e 00 34 00 2e 00 34 00 2b 00 20 00 77 00 69 00 00000020: 74 00 68 00 20 00 6b 00 61 00 67 00 65 00 6e 00 00000030: 32 00 5f 00 75 00 73 00 62 00 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 04 03 09 04 ff 00 g_file_storage gadget: get string descriptor g_file_storage gadget: ep0-in, length 26: 00000000: 1a 03 53 00 65 00 6c 00 66 00 2d 00 70 00 6f 00 00000010: 77 00 65 00 72 00 65 00 64 00 g_file_storage gadget: ep0-setup, length 8: 00000000: 80 06 05 03 09 04 ff 00 g_file_storage gadget: get string descriptor g_file_storage gadget: ep0-in, length 26: 00000000: 1a 03 4d 00 61 00 73 00 73 00 20 00 53 00 74 00 00000010: 6f 00 72 00 61 00 67 00 65 00 thanks, victor -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
