linux-kernel - Re: [PATCH v2 net-next 6/9] net: ethernet: mtk_eth_soc: add MTK_NETSYS

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Message-ID: <ZLLFQJ/CMvqQqRgN@lore-desk>
Date:   Sat, 15 Jul 2023 18:11:44 +0200
From:   Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
Cc:     Daniel Golle <daniel@...rotopia.org>, netdev@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Bjørn Mork <bjorn@...k.no>,
        Florian Fainelli <f.fainelli@...il.com>,
        Greg Ungerer <gerg@...nel.org>
Subject: Re: [PATCH v2 net-next 6/9] net: ethernet: mtk_eth_soc: add
 MTK_NETSYS_V3 capability bit

> on thu, jul 13, 2023 at 03:19:49am +0100, daniel golle wrote:
> > +
> > +		if (mtk_has_caps(eth->soc->caps, mtk_netsys_v3)) {
> 
> this is a case in point for one of my previous comments...
> 
> this code started out believing that testing for mtk_netsys_v2 for v2
> features would be sufficient. your first patch ended up having to
> change that to !v1. how long until this becomes !v1 && !v2 because
> it gets used on v3 and v4 etc?
> 
> this is why i think an integer version field would be a much saner
> approach.

ack, I will fix it.

Regards,
Lorenzo

> 
> -- 
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
> 

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