[v3,2/3] usb/gadget: Add an EP dispose() callback for EP lifetime tracking

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Mon, 2018-01-22 at 15:33 +0100, Greg KH wrote:
> On Fri, Jan 12, 2018 at 05:50:03PM +1100, Benjamin Herrenschmidt wrote:
> > Some UDC may want to allocate endpoints dynamically, either because
> > the HW supports an arbitrary large number or because (like the Aspeed
> > BMC SoCs), the pool of HW endpoints is shared between multiple gadgets.
> > 
> > The allocation side can be done rather easily using the existing
> > match_ep() UDC hook.
> > 
> > However we have no good place to "free" them.
> > 
> > This implements a "simple" variant of this, which calls an EP dispose
> > callback on all EPs associated with a gadget when the composite device
> > gets unbound.
> > 
> > This is required by my upcoming Aspeed vHub driver.
> > 
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > ---
> >  drivers/usb/gadget/composite.c | 8 ++++++++
> >  include/linux/usb/gadget.h     | 1 +
> >  2 files changed, 9 insertions(+)
> 
> Any reason you aren't sending these to the maintainer of the usb gadget
> subsystem?  get_maintainer.pl is your friend :)

Ooops, forgot to CC Felipe, I suppose I assumed he follows the list.

I'll resend them. He saw earlier versions, he proposed a different
approach to solve the lifetime tracking that I very strongly disagreed
with, but he didn't reply to that last email back in the day..

Cheers,
Ben.
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