Re: [PATCH v1 1/4] usb: host: export symbols for xhci hooks usage

Greg Kroah-Hartman
2022-03-23T11:43:42Z

On Wed, Mar 23, 2022 at 10:41:23AM +0100, Krzysztof Kozlowski wrote:
> On 23/03/2022 03:58, Jung Daehwan wrote:
> > On Mon, Mar 07, 2022 at 10:59:06AM +0100, Krzysztof Kozlowski wrote:
> >> On 04/03/2022 07:23, Daehwan Jung wrote:
> >>> Export symbols for xhci hooks usage:
> >>> xhci_ring_free
> >>> - Allow xhci hook to free xhci_ring.
> >>
> >> Instead of copying-pasting the name of function, please explain why do
> >> you need these symbols exported.
> >>
> >> The "Why" is actually one of most important questions, because "what is
> >> this patch doing" we can easily see...
> >>
> >>>
> >>> xhci_get_slot_ctx
> >>> - Allow xhci hook to get slot_ctx from the xhci_container_ctx
> >>> for getting the slot_ctx information to know which slot is
> >>> offloading and compare the context in remote subsystem memory
> >>> if needed.
> >>>
> >>
> >>
> >> Best regards,
> >> Krzysztof
> >>
> >
> > Hi Krzysztof
> >
> > xhci_ring_free has been removed from v3..
> > The reason why I want to export is for managing vendor specific ring.
> > I want to alloc and free vendor specific ring on specific address.
> > It's done with xhci hooks.
>
> It's better, but still does not explain why these have to be exported.
> Please mention where are these hooks going to be. Where are they
> implemented. I actually expect all of these exports to be used in your
> patchset.

All exports _HAVE_ to be used by the patchset. Otherwise it's an
invalid submission.

thanks,

greg k-h