linux-kernel - Re: [PATCH v4 8/8] rpmsg: Turn name service into a stand alone driver

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Date:   Wed, 4 Nov 2020 13:03:32 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Arnaud POULIQUEN <arnaud.pouliquen@...com>,
        linux-remoteproc <linux-remoteproc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 8/8] rpmsg: Turn name service into a stand alone driver

On Wed, 4 Nov 2020 at 11:39, Guennadi Liakhovetski
<guennadi.liakhovetski@...ux.intel.com> wrote:
>
> On Wed, Nov 04, 2020 at 10:34:24AM -0700, Mathieu Poirier wrote:
> > On Wed, Nov 04, 2020 at 03:01:44PM +0100, Guennadi Liakhovetski wrote:
> > > Hi Mathieu, Arnaud,
> > >
> > > I've tried the patch set with my VirtIO / vhost audio implementation,
> > > in general it worked quite well,
> >
> > Very good - it would be nice if you could add your "Tested-by:" tags.
>
> Sure, I guess it would be better if I reply with both "Tested-by" and
> "Reviewed-by" to your next version?
>

Yes, that will be great.

> Thanks
> Guennadi
>
> > > On Tue, Oct 27, 2020 at 11:52:18AM -0600, Mathieu Poirier wrote:
> > > > From: Arnaud Pouliquen <arnaud.pouliquen@...com>
> > > >
> > > > Make the RPMSG name service announcement a stand alone driver so that it
> > > > can be reused by other subsystems.  It is also the first step in making the
> > > > functionatlity transport independent, i.e that is not tied to virtIO.
> > > >
> > > > Co-developed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> > > > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...com>
> > > > ---
> > >
> > > [snip]
> > >
> > > > diff --git a/include/linux/rpmsg_ns.h b/include/linux/rpmsg_ns.h
> > > > index bb479f430080..42786bb759b5 100644
> > > > --- a/include/linux/rpmsg_ns.h
> > > > +++ b/include/linux/rpmsg_ns.h
> > > > @@ -39,4 +39,21 @@ enum rpmsg_ns_flags {
> > > >  /* Address 53 is reserved for advertising remote services */
> > > >  #define RPMSG_NS_ADDR                    (53)
> > > >
> > > > +/**
> > > > + * rpmsg_ns_register_device() - register name service device based on rpdev
> > > > + * @rpdev: prepared rpdev to be used for creating endpoints
> > > > + *
> > > > + * This function wraps rpmsg_register_device() preparing the rpdev for use as
> > > > + * basis for the rpmsg name service device.
> > > > + */
> > > > +static inline int rpmsg_ns_register_device(struct rpmsg_device *rpdev)
> > > > +{
> > > > +       strcpy(rpdev->id.name, "rpmsg_ns");
> > >
> > > you need to
> > >
> > > #include <linux/rpmsg.h>
> >
> > Of course yes - I'll simply add the header file.  I plan on having another
> > revision addressing your comments out by the end of the week or early next week.
> >
> > Thanks,
> > Mathieu
> >
> > >
> > > in this file for rpdev definition. Or you could leave this function in
> > > rpmsg_ns.c, then it's enough to forward-declare struct rpdev here.
> > >
> > > Thanks
> > > Guennadi
> > >
> > > > +       rpdev->driver_override = "rpmsg_ns";
> > > > +       rpdev->src = RPMSG_NS_ADDR;
> > > > +       rpdev->dst = RPMSG_NS_ADDR;
> > > > +
> > > > +       return rpmsg_register_device(rpdev);
> > > > +}
> > > > +
> > > >  #endif
> > > > --
> > > > 2.25.1
> > > >