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Date:   Wed, 5 Apr 2023 16:49:59 +0200
From:   Marco Felsch <m.felsch@pengutronix.de>
To:     Andrew Lunn <andrew@lunn.ch>
Cc:     Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@broadcom.com>,
        Richard Cochran <richardcochran@gmail.com>,
        Radu Pirea <radu-nicolae.pirea@oss.nxp.com>,
        Shyam Sundar S K <Shyam-sundar.S-k@amd.com>,
        Yisen Zhuang <yisen.zhuang@huawei.com>,
        Salil Mehta <salil.mehta@huawei.com>,
        Jassi Brar <jaswinder.singh@linaro.org>,
        Ilias Apalodimas <ilias.apalodimas@linaro.org>,
        Iyappan Subramanian <iyappan@os.amperecomputing.com>,
        Keyur Chudgar <keyur@os.amperecomputing.com>,
        Quan Nguyen <quan@os.amperecomputing.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>, Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
        devicetree@vger.kernel.org, kernel@pengutronix.de
Subject: Re: [PATCH 03/12] net: phy: add phy_device_set_miits helper
Message-ID: <20230405144959.t2vledwhwzyahyuk@pengutronix.de>
References: <20230405-net-next-topic-net-phy-reset-v1-0-7e5329f08002@pengutronix.de>
 <20230405-net-next-topic-net-phy-reset-v1-3-7e5329f08002@pengutronix.de>
 <d00dab9f-7678-4ef3-be51-c31cdb9564d1@lunn.ch>
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On 23-04-05, Andrew Lunn wrote:
> > +void phy_device_set_miits(struct phy_device *phydev,
> > +			  struct mii_timestamper *mii_ts)
> > +{
> > +	if (!phydev)
> > +		return;
> > +
> > +	if (phydev->mii_ts) {
> > +		phydev_dbg(phydev,
> > +			   "MII timestamper already set -> skip set\n");
> > +		return;
> > +	}
> > +
> > +	phydev->mii_ts = mii_ts;
> > +}
> 
> We tend to be less paranoid. Few, if any, other functions test that
> phydev is not NULL. And the current code allows overwriting of an
> existing stamper. If you think overwriting should not be allowed
> return -EINVAL, and change all the callers to test for it.

I can drop the 'if (!phydev)' check if you want. Return -EINVAL is
possible too.

> > +EXPORT_SYMBOL(phy_device_set_miits);
> 
> _GPL please. The code is a bit inconsistent, but new symbols should be
> EXPORT_SYMBOL_GPL.

Sure! Don't know why I added it as EXPORT_SYMBOL in the first place.

> I do however like this patch, hiding away the internals of phydev.

Thanks for the fast response.

Regards,
  Marco

> 
>   Andrew
>