netdev - Re: [PATCH net-next] net: kbuild: Don't default net vendor configs to y

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Message-ID: <20220131151315.4ec5f2d3@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 31 Jan 2022 15:13:15 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
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Subject: Re: [PATCH net-next] net: kbuild: Don't default net vendor configs
 to y

On Mon, 31 Jan 2022 15:06:01 -0800 Florian Fainelli wrote:
> >> Right, but once you start hiding NET_VENDOR_DRIVER_XYZ under a
> >> NET_VENDOR_XYZ Kconfig symbol dependency, if NET_VENDOR_XYZ is not set
> >> to Y, then you have no way to select NET_VENDOR_DRIVER_XYZ and so your
> >> old defconfig breaks.  
> > 
> > To be clear do we actually care about *old* configs or *def* configs?  
> 
> I think we care about oldconfig but maybe less so about defconfigs which 
> are in tree and can be updated.

The oldconfigs would have to not be updated on any intervening kernel
in the last 10+ years to break, right? Or is there another way that an
oldconfig would not have the vendor config set to y at this point?