linux-kernel - Re: [PATCH v1 4/5] misc: pvpanic: Combine ACPI and platform drivers

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Message-ID: <CAK8P3a2L2FWj2z6w_cgz41sg=AXJJ2gEC8Z+wC8FUY6Uq9TdDw@mail.gmail.com>
Date:   Wed, 28 Oct 2020 16:51:19 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Peng Hao <peng.hao2@....com.cn>
Subject: Re: [PATCH v1 4/5] misc: pvpanic: Combine ACPI and platform drivers

(resending from the kernel.org address because of bounces)

On Tue, Oct 27, 2020 at 11:07 PM Arnd Bergmann <arnd@...db.de> wrote:
>
> On Tue, Oct 27, 2020 at 6:58 PM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
>
> >  static int pvpanic_mmio_probe(struct platform_device *pdev)
> >  {
> > -       base = devm_platform_ioremap_resource(pdev, 0);
> > +       struct device *dev = &pdev->dev;
> > +       struct resource *res;
> > +
> > +       res = platform_get_mem_or_io_resource(pdev, 0);
> > +       if (res && resource_type(res) == IORESOURCE_IO)
> > +               base = devm_ioport_map(dev, res->start, resource_size(res));
> > +       else
> > +               base = devm_ioremap_resource(dev, res);
>
> Maybe this could already be combined into a devm_platform_iomap_resource()
> similar to pci_iomap()?
>
>         Arnd