From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pratyush Anand <pratyush.anand@st.com>
Subject: Re: [PATCH V2] PCI: exynos: add support for MSI
Date: Thu, 29 Aug 2013 09:15:08 +0530
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To: Jingoo Han <jg1.han@samsung.com>
Cc: 'Bjorn Helgaas' <bhelgaas@google.com>, "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>, "linux-samsung-soc@vger.kernel.org" <linux-samsung-soc@vger.kernel.org>, 'Kukjin Kim' <kgene.kim@samsung.com>, Mohit KUMAR DCG <Mohit.KUMAR@st.com>, 'Siva Reddy Kallam' <siva.kallam@samsung.com>, 'SRIKANTH TUMKUR SHIVANAND' <ts.srikanth@samsung.com>, 'Arnd Bergmann' <arnd@arndb.de>, 'Sean Cross' <xobs@kosagi.com>, 'Kishon Vijay Abraham I' <kishon@ti.com>, 'Thierry Reding' <thierry.reding@gmail.com>, 'Thomas Petazzoni' <thomas.petazzoni@free-electrons.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
List-Id: devicetree@vger.kernel.org

On Wed, Aug 28, 2013 at 04:17:24PM +0800, Jingoo Han wrote:
> On Friday, August 23, 2013 5:36 PM, Pratyush Anand wrote:
> > On Fri, Aug 23, 2013 at 02:04:20PM +0800, Jingoo Han wrote:
> 

[...]

> > #define MAX_PCIE_PORT_SUPPORTED 3
> > static DECLARE_BITMAP(msi_irq_in_use[MAX_PCIE_PORT_SUPPORTED],
> >                   NUM_MSI_IRQS);
> > static unsigned int *msi_data[MAX_PCIE_PORT_SUPPORTED];
> 
> No, there is no need to do it.
> Without this, we can use 3 RCs by adding a node of 3rd RC to dt file.
> 

Yes, you can use RCs by adding nodes to dt file. But you will need one 
msi_irq_in_use and one msi_data per RC (ie per port in this driver), isn't it? 

Regards
Pratyush