> >    if (dev->tbusy)
> >       return(1);
> 
> This defensiveness is understandable, but why would you be called if your tbusy
> is 1? I'd almost be tempted to put in a panic() if that happens, since it's a
> protocol violation. It could indicate that you are being called by a subsystem
> that has no business calling you.

You may get called with tbusy=1 on new frames. You won't however get
stuck in a loop with them and the kernel is quite happy if you really meant
tbusy=1 and return 1 to reject the frame

Alan

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