netdev - Re: [RFC 0/6] pcmcia: separate 16-bit support from cardbus

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Date:   Mon, 27 Feb 2023 20:15:40 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Dominik Brodowski <linux@...inikbrodowski.net>,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        H Hartley Sweeten <hsweeten@...ionengravers.com>,
        Ian Abbott <abbotti@....co.uk>,
        Jakub Kicinski <kuba@...nel.org>,
        Kevin Cernekee <cernekee@...il.com>,
        Lukas Wunner <lukas@...ner.de>,
        Manuel Lauss <manuel.lauss@...il.com>,
        Oliver Hartkopp <socketcan@...tkopp.net>,
        Olof Johansson <olof@...om.net>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        YOKOTA Hiroshi <yokota@...lab.is.tsukuba.ac.jp>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-can@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [RFC 0/6] pcmcia: separate 16-bit support from cardbus

On Mon, Feb 27, 2023 at 02:34:51PM +0100, Arnd Bergmann wrote:
> I don't expect this to be a problem normal laptop support, as the last
> PC models that predate Cardbus support (e.g. 1997 ThinkPad 380ED) are
> all limited to i586MMX CPUs and 80MB of RAM. This is barely enough to
> boot Tiny Core Linux but not a regular distro.

Am I understanding that the argument you're putting forward here is
"cardbus started in year X, so from year X we can ignore 16-bit
PCMCIA support" ?

Given that PCMCIA support has been present in x86 hardware at least
up to 2010, I don't see how that is any basis for making a decision
about 16-bit PCMCIA support.

Isn't the relevant factor here whether 16-bit PCMCIA cards are still
in use on hardware that can run a modern distro? (And yes, x86
machines that have 16-bit PCMCIA can still run Debian Stable today.)

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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