linux-kernel - Re: [PATCH v3 20/38] net: handle HAS

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Message-ID: <alpine.DEB.2.21.2303150938001.53876@angie.orcam.me.uk>
Date:   Wed, 15 Mar 2023 09:47:04 +0000 (GMT)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Niklas Schnelle <schnelle@...ux.ibm.com>
cc:     Arnd Bergmann <arnd@...db.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-pci@...r.kernel.org, Arnd Bergmann <arnd@...nel.org>,
        netdev@...r.kernel.org, linux-can@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org, linux-hams@...r.kernel.org
Subject: Re: [PATCH v3 20/38] net: handle HAS_IOPORT dependencies

On Tue, 14 Mar 2023, Niklas Schnelle wrote:

> those drivers requiring them. For the DEFXX driver there use of I/O
> ports is optional and we only need to fence those paths.can It also

 Some writing mess-up here, should it read:

"For the DEFXX driver the use of I/O ports is optional and we only need to 
fence those paths. It also [...]"

?

> diff --git a/drivers/net/fddi/Kconfig b/drivers/net/fddi/Kconfig
> index 846bf41c2717..fa3f1e0fe143 100644
> --- a/drivers/net/fddi/Kconfig
> +++ b/drivers/net/fddi/Kconfig
> @@ -29,7 +29,7 @@ config DEFZA
>  
>  config DEFXX
>  	tristate "Digital DEFTA/DEFEA/DEFPA adapter support"
> -	depends on FDDI && (PCI || EISA || TC)
> +	depends on FDDI && (PCI || EISA || TC) && HAS_IOPORT

 This part would incorrectly disable the driver for !HAS_IOPORT and is not 
needed given the change below:

> diff --git a/drivers/net/fddi/defxx.c b/drivers/net/fddi/defxx.c
> index 1fef8a9b1a0f..5f386eba9618 100644
> --- a/drivers/net/fddi/defxx.c
> +++ b/drivers/net/fddi/defxx.c
> @@ -254,7 +254,7 @@ static const char version[] =
>  #define DFX_BUS_TC(dev) 0
>  #endif
>  
> -#if defined(CONFIG_EISA) || defined(CONFIG_PCI)
> +#ifdef HAS_IOPORT
>  #define dfx_use_mmio bp->mmio
>  #else
>  #define dfx_use_mmio true

is it?

  Maciej