On Tue, 19 Mar 2019 [email protected] wrote:

> Zitat von Guido Kiener <[email protected]>:
> 
> > Restore the status of ep->stopped in function net2272_dequeue().
> >
> > When the given request is not found in the endpoint queue
> > the function returns -EINVAL without restoring the state of
> > ep->stopped. Thus the endpoint keeps blocked and does not transfer
> > any data anymore.
> >
> > This fix is only compile-tested, since we do not have a
> > corresponding hardware. An analogous fix was tested in the sibling
> > driver. See "usb: gadget: net2280: Fix net2280_dequeue()"
> >
> > Signed-off-by: Guido Kiener <[email protected]>
> > ---
> >  drivers/usb/gadget/udc/net2272.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/usb/gadget/udc/net2272.c  
> > b/drivers/usb/gadget/udc/net2272.c
> > index b77f3126580e..c2011cd7df8c 100644
> > --- a/drivers/usb/gadget/udc/net2272.c
> > +++ b/drivers/usb/gadget/udc/net2272.c
> > @@ -945,6 +945,7 @@ net2272_dequeue(struct usb_ep *_ep, struct  
> > usb_request *_req)
> >                     break;
> >     }
> >     if (&req->req != _req) {
> > +           ep->stopped = stopped;
> >             spin_unlock_irqrestore(&ep->dev->lock, flags);
> >             return -EINVAL;
> >     }
> > --
> > 2.17.1
> 
> Alan,
> 
> do you want to add an acknowledgement for the sibling driver, too?
> 
> Guido

Yes, okay.  I can't test this patch either, but for what it's worth:

Acked-by: Alan Stern <[email protected]>

Alan Stern

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