RE: [PATCH] usb: gadget: storage: check for valid USB_BULK_GET_MAX_LUN_REQUEST

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On Mon, 17 Oct 2011, Paul Zimmerman wrote:

> > From: Alan Stern [mailto:stern@xxxxxxxxxxxxxxxxxxx]
> > Sent: Saturday, October 15, 2011 12:40 PM
> > 
> > The analyzer screenshot shows that the device did send back only one
> > byte of data.  So this appears to be a bug in the CV program itself,
> > not a violation of any sort.  In fact, the error message indicates that
> > the mass-storage gadgets' current behavior is correct.  (But maybe the
> > CV program prints out the wrong error message -- this would still be a
> > bug, of course.)
> > 
> > Does the same thing happen if you run the test using an EHCI controller
> > instead of XHCI?
> 
> This is the USB 3.0 command verifier, so it only supports xHCI
> controllers as the test host. However, if I connect the device as
> a USB 2.0 device, the test fails in exactly the same way.

All right.  Guess I'll have to try to do my own testing with the
USB-2.0 CV. If the two CVs give inconsistent results, that will be a
very good reason to complain to the USB-IF.

Alan Stern

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