linux-kernel - Re: [PATCH v4 7/8] netdev: octeon-ethernet: Add Cavium Octeon III support.

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Message-ID: <20171129221631.GD1706@lunn.ch>
Date:   Wed, 29 Nov 2017 23:16:31 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Souptick Joarder <jrdr.linux@...il.com>,
        David Daney <david.daney@...ium.com>,
        Mark Rutland <mark.rutland@....com>, linux-mips@...ux-mips.org,
        devel@...verdev.osuosl.org, devicetree@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ralf@...ux-mips.org, Carlos Munoz <cmunoz@...ium.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Steven J. Hill" <steven.hill@...ium.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        James Hogan <james.hogan@...s.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v4 7/8] netdev: octeon-ethernet: Add Cavium Octeon III
 support.

On Wed, Nov 29, 2017 at 10:11:38PM +0300, Dan Carpenter wrote:
> On Wed, Nov 29, 2017 at 09:37:15PM +0530, Souptick Joarder wrote:
> > >> +static int bgx_port_sgmii_set_link_speed(struct bgx_port_priv *priv, struct port_status status)
> > >> +{
> > >> +       u64     data;
> > >> +       u64     prtx;
> > >> +       u64     miscx;
> > >> +       int     timeout;
> > >> +
> > 
> > >> +
> > >> +       switch (status.speed) {
> > >> +       case 10:
> > >
> > > In my opinion, instead of hard coding the value, is it fine to use ENUM ?
> >    Similar comments applicable in other places where hard coded values are used.
> > 
> 
> 10 means 10M right?  That's not really a magic number.  It's fine.

There are also :
uapi/linux/ethtool.h:#define SPEED_10		10
uapi/linux/ethtool.h:#define SPEED_100		100
uapi/linux/ethtool.h:#define SPEED_1000		1000
uapi/linux/ethtool.h:#define SPEED_10000	10000
uapi/linux/ethtool.h:#define SPEED_100000	100000

	     Andrew