linux-kernel - Re: [PATCH] drivers: depend on HAS_IOMEM for devm_platform_ioremap

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Message-ID: <CACRpkdbeyoQbVFDFq1Z3NXoWgu5F2a2pNQd9XJ4KkOws7_gUVw@mail.gmail.com>
Date:   Fri, 22 Feb 2019 17:22:18 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Rob Herring <rob.herring@...aro.org>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Keerthy <j-keerthy@...com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH] drivers: depend on HAS_IOMEM for devm_platform_ioremap_resource()

On Fri, Feb 22, 2019 at 3:22 PM Rob Herring <rob.herring@...aro.org> wrote:

> Just a drive by comment, but IMO we should just get rid of HAS_IOMEM
> altogether. It is really just a !UML option as I think every other
> arch enables it. If folks really want to disable drivers on UML, just
> disable the subsystems.

I just got a build failure from S390 for the same thing so apparently
there is S390 Linux without IOMEM. I have no idea how that works
but whenever Arnd start talking to me about how S390 works
my head start spinning.

Yours,
Linus Walleij