From mboxrd@z Thu Jan  1 00:00:00 1970
From: Suravee.Suthikulpanit@amd.com (Suravee Suthikulpanit)
Date: Wed, 12 Nov 2014 18:36:07 +0700
Subject: [PATCH V2 2/2] PCI: generic: Add msi_parent DT binding
In-Reply-To: <CA+mB=1LEEtPCixB9Ej74L03yPPH7D6YvfpkZyJgsHCm97-GvKg@mail.gmail.com>
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 <1415733454-24322-3-git-send-email-suravee.suthikulpanit@amd.com>
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Message-ID: <54634627.60502@amd.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 11/12/14 13:56, Srikanth Thokala wrote:
>> @@ -122,9 +123,19 @@ static int gen_pci_config_write(struct pci_bus *bus, unsigned int devfn,
>> >         return PCIBIOS_SUCCESSFUL;
>> >  }
>> >
>> >+static int gen_pci_set_msi_parent(struct pci_bus *bus)
>> >+{
>> >+       struct gen_pci *pci = bus_to_gen_pci(bus);
>> >+
>> >+       bus->msi = pci->mchip;
>> >+
>> >+       return PCIBIOS_SUCCESSFUL;
>> >+}
>> >+
>> >  static struct pci_ops gen_pci_ops = {
>> >         .read   = gen_pci_config_read,
>> >         .write  = gen_pci_config_write,
>> >+       .set_msi_parent = gen_pci_set_msi_parent,
> We assign the msi chip through add_bus() call, do we still need this?

Certain architecture (i.e arm64) doesn't implement struct hw_pci. 
Therefore, there is no add_bus().  However, this new API should allow 
non-arch dependent implementation.

Suravee