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Message-ID: <Y/0Zy0nUmorvrp1u@shell.armlinux.org.uk>
Date:   Mon, 27 Feb 2023 20:59:55 +0000
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Arnd Bergmann <arnd@...nel.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        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 <netdev@...r.kernel.org>
Subject: Re: [RFC 0/6] pcmcia: separate 16-bit support from cardbus

On Mon, Feb 27, 2023 at 09:38:54PM +0100, Arnd Bergmann wrote:
> On Mon, Feb 27, 2023, at 21:23, Larry Finger wrote:
> > On 2/27/23 07:34, Arnd Bergmann wrote:
> 
> >
> > Your patch set also breaks my PowerBook G4. The output of 'lspci -nn | grep 
> > Network' shows the following before your patch is applied:
> >
> > 0001:10:12.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4306 
> > 802.11b/g Wireless LAN Controller [14e4:4320] (rev 03)
> > 0001:11:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4318 
> > [AirForce One 54g] 802.11g Wireless LAN Controller [14e4:4318] (rev 02)
> >
> > The first of these is broken and built into the laptop. The second is plugged 
> > into a PCMCIA slot, and uses yenta-socket as a driver.
> >
> > When your patches are applied, the second entry vanishes.
> >
> > Yes, this hardware is ancient, but I would prefer having this wifi interface 
> > work. I can provide any output you need.
> 
> Is this the Cardbus or the PCMCIA version of the BCM4306 device? As far
> as I understand this particular chip can be wired up either way inside
> of the card, and the PowerBook G4 supports both types of devices.
> 
> If it's the PCMCIA version, then dropping support for it was the idea
> of the patch series that we can debate, but if it was the Cardbus version
> that broke, then this was likely a bug I introduced by accident.

If it shows up as a PCI device, it will be cardbus, not 16-bit ISA.

PCMCIA cards don't show up in lspci.

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