linux-kernel - Re: [net-next PATCH v2 3/4] net: phy: restructure __phy_write/read

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Message-ID: <ZWXbdjOCKxJFyXJK@shell.armlinux.org.uk>
Date:   Tue, 28 Nov 2023 12:22:14 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Christian Marangi <ansuelsmth@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <florian.fainelli@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Vladimir Oltean <olteanv@...il.com>,
        David Epping <david.epping@...singlinkelectronics.com>,
        Harini Katakam <harini.katakam@....com>,
        Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [net-next PATCH v2 3/4] net: phy: restructure
 __phy_write/read_mmd to helper and phydev user

On Tue, Nov 28, 2023 at 01:11:00PM +0100, Christian Marangi wrote:
> On Tue, Nov 28, 2023 at 01:46:10AM +0100, Andrew Lunn wrote:
> > On Mon, Nov 27, 2023 at 12:51:40AM +0100, Christian Marangi wrote:
> > > Restructure phy_write_mmd and phy_read_mmd to implement generic helper
> > > for direct mdiobus access for mmd and use these helper for phydev user.
> > > 
> > > This is needed in preparation of PHY package API that requires generic
> > > access to the mdiobus and are deatched from phydev struct but instead
> > > access them based on PHY package base_addr and offsets.
> > 
> > Why is this all going into the header file?
> >
> 
> Was following the pattern done by phy_package_read/write.
> 
> Considering those API are not single function call... I wonder if those
> should be moved in phy_core.c instead of static inline them in the
> header.

phy_package_{read,write} are simple affairs - one test and a call
to a function. That makes them fairly small. The proposed new
functions aren't small, which means that we get a load of code each
time they're used. Therefore, it's better that they're out of line.

-- 
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