• Alan Stern's avatar
    [PATCH] USB: Add dummy_hcd to the main kernel · 0c7989b9
    Alan Stern authored
    This is a resubmission of as225, together with appropriate changes for the
    g_serial driver.  David Brownell's latest g_ether update makes it
    unnecessary to change that file or gadget_chips.h.
    
    
    
    dummy_hcd is simultaneously a host controller driver and a device
    controller driver.  It creates a simulated HC together with a simulated
    UDC plugged into it.  Gadget drivers can run under the simulated UDC and
    will appear as regular USB devices on the simulated HC.  The simulation is
    reasonably (although not totally) realistic.
    
    It's a wonderful tool for testing and developing gadget drivers without
    the need for lots of additional hardware: Both the host driver and the
    gadget driver can run on the same computer.  It's been available for quite
    some time in David's gadget-2.6 tree and it works well.  I couldn't have
    gotten the file-storage gadget running in any reasonable length of time
    without it.
    0c7989b9
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