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SubjectRe: [PATCH V2 2/2] PCI: generic: Add msi_parent DT binding
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


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