[U-Boot] [PATCH] usb: ci_udc: fix interaction with CONFIG_USB_ETH_CDC

["Jörg Krause" <jkrause@posteo.de>]

On 06/28/2014 09:59 PM, Marek Vasut wrote:

> I would actually be really glad if you could test plain u-boot-usb/master and
> see if your USB problem is present there. Also, it would be really nice to
> isolate the sequence of commands which triggers the bug, so we have a proper
> reproducible testcase.
>
> Anyway, this thread is not a place where I would like to discuss this. This
> should be discussed in the "original" thread, that is:
>
> Subj: [PATCH] usb: ci_udc: fix interaction with CONFIG_USB_ETH_CDC

I cloned u-boot-usb/master and tested it. I am running "tftpd 
rootfs.ubifs" several times. Here is the log (I shortened the loading 
process bar):

    HTLLCLLC

    U-Boot 2014.07-rc3-g18e0313 (Jun 28 2014 - 22:17:52)

    CPU:   Freescale i.MX28 rev1.2 at 454 MHz
    BOOT:  NAND, 3V3
    DRAM:  64 MiB
    NAND:  128 MiB
    In:    serial
    Out:   serial
    Err:   serial
    Net:   usb_ether [PRIME]
    Hit any key to stop autoboot:  0
    => tftp rootfs.ubifs
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'rootfs.ubifs'.
    Load address: 0x40008000
    Loading: [snip]
      ##############################################################T ###
          [snip]
          1.7 MiB/s
    done
    Bytes transferred = 13205504 (c98000 hex)
    => tftp rootfs.ubifs
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'rootfs.ubifs'.
    Load address: 0x40008000
    Loading:
    #################################################################
          [snip]
          5.6 MiB/s
    done
    Bytes transferred = 13205504 (c98000 hex)
    => tftp rootfs.ubifs
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'rootfs.ubifs'.
    Load address: 0x40008000
    Loading:
    #################################################################
          [snip]
          5.6 MiB/s
    done
    Bytes transferred = 13205504 (c98000 hex)
    => tftp rootfs.ubifs
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    ERROR: The remote end did not respond in time.
    at drivers/usb/gadget/ether.c:2388/usb_eth_init()
    =>

The error always appears after calling tftp the third time! The first 
two runs work fine, but the third one always fails. I run this test 
about 20 times.

Best regards
J?rg Krause