linux-kernel - Re: [PATCH 1/1] usb: gadget: add raw-gadget interface

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Date:   Fri, 15 Nov 2019 11:20:30 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     USB list <linux-usb@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Jonathan Corbet <corbet@....net>,
        Felipe Balbi <balbi@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>
Subject: Re: [PATCH 1/1] usb: gadget: add raw-gadget interface

On Thu, Nov 14, 2019 at 04:33:56PM +0100, Andrey Konovalov wrote:
> On Thu, Nov 14, 2019 at 4:08 PM Andrey Konovalov <andreyknvl@...gle.com> wrote:
> > On Fri, Nov 8, 2019 at 10:17 PM Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org> wrote:
> > > > +static void gadget_reset(struct usb_gadget *gadget)
> > > > +{
> > > > +     pr_debug("ignoring\n");
> > > > +}
> > >
> > > I think you don't even need functions for these, right?  If not, just
> > > remove.  If you do, we should fix the gadget core to not require them :)
> >
> > Will do in v2.
> 
> Actually, I just hit that Dummy HCD/UDC requires a disconnect callback
> to be present. And I assume other UDCs might do the same, so I'd
> rather include the callbacks just in case. WDYT?

If they require it to be present then yes, leave all of these.

thanks,

greg k-h