Re: [PATCH] usb: gadget: add temporary __uses_feature_flags

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On Mon, Mar 03, 2014 at 04:52:27PM -0600, Felipe Balbi wrote:
> On Mon, Mar 03, 2014 at 02:46:32PM -0800, Greg KH wrote:
> > On Mon, Mar 03, 2014 at 11:04:02AM -0600, Felipe Balbi wrote:
> > > during the conversion to a new method of finding
> > > proper endpoints, we need to give our users a
> > > grace period until full conversion is finished.
> > 
> > Who are these "users"?  kernel developers?  Or end-users?
> 
> kernel developers.
> 
> > > This patch adds a new internal and temporary
> > > __uses_feature_flags flag which will tell gadget
> > > framework that this UDC has been converted to
> > > the new feature flag-based endpoint scheme.
> > > 
> > > Once all gadget drivers are converted, this
> > > flag will be removed.
> > > 
> > > Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> > > ---
> > >  drivers/usb/dwc3/gadget.c       |  1 +
> > >  drivers/usb/gadget/epautoconf.c | 48 +++++++++++++++++++++--------------------
> > >  drivers/usb/gadget/s3c-hsotg.c  |  1 +
> > >  include/linux/usb/gadget.h      |  2 ++
> > >  4 files changed, 29 insertions(+), 23 deletions(-)
> > > 
> > > diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
> > > index eaf8537..54b40ce 100644
> > > --- a/drivers/usb/dwc3/gadget.c
> > > +++ b/drivers/usb/dwc3/gadget.c
> > > @@ -2733,6 +2733,7 @@ int dwc3_gadget_init(struct dwc3 *dwc)
> > >  	dwc->gadget.speed		= USB_SPEED_UNKNOWN;
> > >  	dwc->gadget.sg_supported	= true;
> > >  	dwc->gadget.name		= "dwc3-gadget";
> > > +	dwc->gadget.__uses_feature_flags = true;
> > 
> > I don't really understand what this is doing for anyone.  Can't we just
> > fix up all in-kernel users of the flags properly?
> 
> I can try to do that, yes, but for v3.15 might be quite a bit of work.
> Anyway, I guess we still have a few days left.

I have dropped those patches from my "next" branch, it'll give me more
time to make this right for v3.16.

-- 
balbi

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