Re: [PATCH 1/5 v8] usb: Adding SuperSpeed support to dummy_hcd

[Felipe Balbi]

On Sun, Mar 27, 2011 at 02:19:25PM +0200, Tanya Brokhman wrote:
> Hi
> 
> > >
> > >  MODULE_DESCRIPTION (DRIVER_DESC);
> > >  MODULE_AUTHOR ("David Brownell");
> > > @@ -220,6 +223,7 @@ static inline struct dummy *gadget_dev_to_dummy
> > (struct device *dev)
> > >  }
> > >
> > >  static struct dummy			*the_controller;
> > > +static struct dummy			*the_ss_controller;
> > 
> > the only thing I don't like, is why you splitted the ss controller to a
> > separate controller. Why don't you use the same ? From SW perspective,
> > we can treat SS and HS/FS/LS controllers as one unit.
> > 
> 
> Actually I'm not sure about that... Because SS controller handles things a
> bit differently than HS/FS/LS. For example look at set_ss_link_state(), the
> port status is reported differently than for HS/FS/LS devices.
> It could be done, I mean spare the the_ss_controller variable and use
> the_controller, and we did that at first, but later on we decided to go back
> to this implementation since the code got too complex. Since dummy_hcd.c is
> used for debugging purposes we decided that simplicity is the better
> approach here.

you can have two different functions and decide which one to call by
checking gadget->speed.

-- 
balbi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/