netdev - Re: [PATCH net 0/3] ethernet: fix some esoteric drivers after netdev->dev

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Message-ID: <CAK8P3a2NOr2tGLkf-4uBx4t6zqqZsobY-79nqaeQ-pUC2h5Kvg@mail.gmail.com>
Date:   Wed, 26 Jan 2022 00:59:47 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Jakub Kicinski <kuba@...nel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     Arnd Bergmann <arnd@...db.de>, David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>, dave@...dillows.org
Subject: Re: [PATCH net 0/3] ethernet: fix some esoteric drivers after
 netdev->dev_addr constification

On Tue, Jan 25, 2022 at 11:28 PM Jakub Kicinski <kuba@...nel.org> wrote:
> On Tue, 25 Jan 2022 14:23:14 -0800 Jakub Kicinski wrote:
> > Looking at recent fixes for drivers which don't get included with
> > allmodconfig builds I thought it's worth grepping for more instances of:
> >
> >   dev->dev_addr\[.*\] =
> >
> > This set contains the fixes.
>
> Hi Arnd, there's another case in drivers/net/ethernet/i825xx/ether1.c
> which will be broken in 5.17, it looks like only RiscPC includes that.
> But when I do:
>
> make ARCH=arm CROSS_COMPILE=$cross/arm-linux-gnueabi/bin/arm-linux-gnueabi- O=build_tmp/ rpc_defconfig
>
> The resulting config is not for ARCH_RPC:
>
> $ grep ARM_ETHER1 build_tmp/.config
> $ grep RPC build_tmp/.config
> # CONFIG_AF_RXRPC is not set
> CONFIG_SUNRPC=y
> # CONFIG_SUNRPC_DEBUG is not set
> CONFIG_XZ_DEC_POWERPC=y
> $ grep ACORN build_tmp/.config
> # CONFIG_ACORN_PARTITION is not set
> CONFIG_FONT_ACORN_8x8=y
>
> Is there an extra smidgen of magic I need to produce a working config
> here?  Is RPC dead and can we send it off to Valhalla?

Support for ARMv3 was removed in gcc-9, so there is a Kconfig
dependency on the compiler version to prevent broken builds.
You can use the gcc-8 builds from kernel.org[1].

Russell still uses this machine with an older compiler though, and
I guess he will keep using newer kernels for as long as gcc-8 can
build them.

No idea which ethernet card he uses, there are at least three of them.

      Arnd

[1] https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.5.0/x86_64-gcc-8.5.0-nolibc-arm-linux-gnueabi.tar.gz