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WEC7 USBDISK6.DLL is not loading with USB self powered hub RRS feed

  • Question

  • USB mass storage device is tested with bus-powered hub, and is working fine.

    But the same mass storage device is failing with self-powered hub.

    Through kernel debugger log, I came to know that, in working case (bus-powered hub), the USBD.dll is loading USBMSC.dll and USBDISK6.dll.

    But in non-working case (self-powered hub), USBDISK6.dll is not loading, and is stops after USBMSC.dll loaded.

    (It is not setting over-current bit in host port register).

    What could be the cause for this?

    Thanks.
    Monday, October 27, 2014 10:38 AM

All replies

  • Hi Surendran,

    As the USBDisk is working in one case, best way might be have a debug build in both the scenarios and compare them side by side.

    Regards,

    GSR

    Monday, October 27, 2014 11:05 AM