From: Arnd Bergmann <arnd@arndb.de>
To: Gabriel FERNANDEZ <gabriel.fernandez@st.com>
Cc: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Srinivas Kandagatla <srinivas.kandagatla@gmail.com>,
        Maxime Coquelin <maxime.coquelin@st.com>,
        Patrice Chotard <patrice.chotard@st.com>,
        Russell King <linux@arm.linux.org.uk>,
        Bjorn Helgaas <bhelgaas@google.com>, Mohit Kumar <mohit.kumar@st.com>,
        Jingoo Han <jg1.han@samsung.com>,
        Grant Likely <grant.likely@linaro.org>,
        Gabriel Fernandez <gabriel.fernandez@linaro.org>,
        Fabrice Gasnier <fabrice.gasnier@st.com>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Thierry Reding <treding@nvidia.com>,
        Minghuan Lian <Minghuan.Lian@freescale.com>,
        Magnus Damm <damm@opensource.se>, Will Deacon <will.deacon@arm.com>,
        Tanmay Inamdar <tinamdar@apm.com>,
        Murali Karicheri <m-karicheri2@ti.com>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Pratyush Anand <pratyush.anand@st.com>,
        Sachin Kamat <sachin.kamat@samsung.com>, Andrew Lunn <andrew@lunn.ch>,
        Liviu Dudau <Liviu.Dudau@arm.com>,
        Srikanth Thokala <sthokal@xilinx.com>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        kernel@stlinux.com, linux-pci@vger.kernel.org,
        Lee Jones <lee.jones@linaro.org>
Subject: Re: [PATCH 4/5] PCI: designware: Add setup bus-related to pcie_host_ops
Date: Wed, 17 Dec 2014 23:16:12 +0100
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On Wednesday 17 December 2014 11:34:45 Gabriel FERNANDEZ wrote:
> ST sti SoCs PCIe IPs are built around DesignWare IP Core.
> But in these SoCs PCIe IP doesn't support IO.
> 
> To support this, add setup_bus() to pcie_host_ops.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org>

The dw-pcie driver should be able to tell whether the device has
an I/O space or not, and do the right thing based on that. Don't
add an implementation specific callback for that.

	Arnd
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