linux-kernel - Re: [PATCH 08/10] PCI: dwc: artpec6: add support for endpoint mode

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Date:   Thu, 19 Oct 2017 00:59:12 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Niklas Cassel <niklas.cassel@...s.com>,
        Niklas Cassel <niklass@...s.com>,
        Jesper Nilsson <jespern@...s.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Jingoo Han <jingoohan1@...il.com>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        Peter Robinson <pbrobinson@...il.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Gabriele Paoloni <gabriele.paoloni@...wei.com>,
        Duc Dang <dhdang@....com>, linux-arm-kernel@...s.com,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/10] PCI: dwc: artpec6: add support for endpoint mode

On Mon, Oct 16, 2017 at 06:43:26PM -0500, Bjorn Helgaas wrote:
> understand it.  I guess the idea is to build pcie-artpec6.o if either
> CONFIG_PCIE_ARTPEC6_HOST or CONFIG_PCIE_ARTPEC6_EP is set (or both).
> 
> Is this really the simplest way to express that in Kconfig?  Both the
> "if PCIE_ARTPEC6" and this ifneq thing are complicated and relatively
> unusual.

I thĳnk the right style is to make PCIE_ARTPEC6 a hidden kconfig
symbol without help text, and then have PCIE_ARTPEC6_HOST and
PCIE_ARTPEC6_EP select it.