netdev - Re: [RFC v4 net-next 12/17] mfd: ocelot: add shared resource names for switch functionality

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Date:   Mon, 31 Oct 2022 19:39:23 -0700
From:   Colin Foster <colin.foster@...advantage.com>
To:     Lee Jones <lee@...nel.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Russell King <linux@...linux.org.uk>,
        UNGLinuxDriver@...rochip.com,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [RFC v4 net-next 12/17] mfd: ocelot: add shared resource names
 for switch functionality

Hi Lee,

On Mon, Oct 31, 2022 at 09:35:01AM +0000, Lee Jones wrote:
> On Sat, 08 Oct 2022, Colin Foster wrote:
> 
> > The switch portion of the Ocelot chip relies on several resources. Define
> > the resource names here, so they can be referenced by both the switch
> > driver and the MFD.
> > 
> > Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> > ---
> > 
> > v4
> >     * New patch. Previous versions had entire structures shared,
> >       this only requires that the names be shared.
> > 
> > ---
> >  include/linux/mfd/ocelot.h | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/include/linux/mfd/ocelot.h b/include/linux/mfd/ocelot.h
> > index dd72073d2d4f..b80f2f5ff1d6 100644
> > --- a/include/linux/mfd/ocelot.h
> > +++ b/include/linux/mfd/ocelot.h
> > @@ -13,6 +13,15 @@
> >  
> >  struct resource;
> >  
> > +#define OCELOT_RES_NAME_ANA	"ana"
> > +#define OCELOT_RES_NAME_QS	"qs"
> > +#define OCELOT_RES_NAME_QSYS	"qsys"
> > +#define OCELOT_RES_NAME_REW	"rew"
> > +#define OCELOT_RES_NAME_SYS	"sys"
> > +#define OCELOT_RES_NAME_S0	"s0"
> > +#define OCELOT_RES_NAME_S1	"s1"
> > +#define OCELOT_RES_NAME_S2	"s2"
> 
> I've never been a fan of defining name strings.
> 
> The end of the define name is identical to the resource names.
> 
> This also makes grepping that much harder for little gain.

I defined them here because they'll be directly used in multiple files.
In this case, drivers/net/dsa/ocelot/ocelot_ext.c uses all these defines
as well as drivers/mfd/ocelot-core.c. Future patch sets will also
utilize other resource names by string as well...

But I'll plan to drop this patch next round unless someone disagrees.

Thanks for the feedback!

> 
> -- 
> Lee Jones [李琼斯]