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 10:34:24 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
Cc:     ohad@...ery.com, bjorn.andersson@...aro.org,
        arnaud.pouliquen@...com, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 8/8] rpmsg: Turn name service into a stand alone driver

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.

> 
> 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
> >