linux-kernel - Re: [PATCH net-next 1/7] net: dsa: mv88e6xxx: provide printing macros

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Message-ID: <20170608193713.GG20216@lunn.ch>
Date:   Thu, 8 Jun 2017 21:37:13 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...oirfairelinux.com,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH net-next 1/7] net: dsa: mv88e6xxx: provide printing macros

On Thu, Jun 08, 2017 at 03:04:39PM -0400, Vivien Didelot wrote:
> The mv88e6xxx driver accesses a port's netdev mostly for printing.
> 
> This is bad for 2 reasons: DSA and CPU ports do not have a netdev
> pointer; it doesn't give us a correct picture of why a DSA driver might
> need to access a port's netdev.
> 
> Introduce mv88e6xxx_{dbg,err,warn} macros to print messages with a
> prefix containing the real switch name (not the compatible one),
> as well as the switch and port indexes.

Hi Vivien

I agree with the principle, but wonder about the naming. We have some
stuff which is not per port, but at the chip level. It would be nice
to have a similar set of helpers, but which only take chip. So maybe
we want to call these mv88e6xxx_port_{dbg, err, warn} and later add
mv88e6xxx_chip_{dbg, err, warn}.

   Andrew