linux-kernel - Re: [net-next PATCH RFC v6 12/16] net: dsa: qca8k: add support for mdio read/write in Ethernet packet

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Message-ID: <61ba1e4e.1c69fb81.7ede4.493e@mx.google.com>
Date:   Wed, 15 Dec 2021 17:56:43 +0100
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [net-next PATCH RFC v6 12/16] net: dsa: qca8k: add support for
 mdio read/write in Ethernet packet

On Wed, Dec 15, 2021 at 02:47:58PM +0200, Vladimir Oltean wrote:
> On Tue, Dec 14, 2021 at 11:44:05PM +0100, Ansuel Smith wrote:
> > +static int qca8k_connect_tag_protocol(struct dsa_switch *ds,
> > +				      enum dsa_tag_protocol proto)
> > +{
> > +	struct qca8k_priv *qca8k_priv = ds->priv;
> > +
> > +	switch (proto) {
> > +	case DSA_TAG_PROTO_QCA:
> > +		struct tag_qca_priv *priv;
> 
> Actually this fails to compile:
> 
> drivers/net/dsa/qca8k.c: In function ‘qca8k_connect_tag_protocol’:
> drivers/net/dsa/qca8k.c:2893:3: error: a label can only be part of a statement and a declaration is not a statement
>  2893 |   struct tag_qca_priv *priv;
>       |   ^~~~~~
> make[3]: *** [scripts/Makefile.build:287: drivers/net/dsa/qca8k.o] Error 1
> 
> This is what the {} brackets are for.
> 
> Also, while you're at this, please name "priv" "tagger_data".
>

I didn't have this error, sorry. Just to make sure I didn't make these kind of
error anymore what compile did you use and with what flags? 

> > +
> > +		priv = ds->tagger_data;
> > +
> > +		mutex_init(&qca8k_priv->mdio_hdr_data.mutex);
> > +		init_completion(&qca8k_priv->mdio_hdr_data.rw_done);
> > +
> > +		priv->rw_reg_ack_handler = qca8k_rw_reg_ack_handler;
> > +
> > +		break;
> > +	default:
> > +		return -EOPNOTSUPP;
> > +	}
> > +
> > +	return 0;
> >  }

-- 
	Ansuel