On 10/12/15 17:53, jakeo@xxxxxxxxxxxxx wrote:
> From: Jake Oshins <jakeo@xxxxxxxxxxxxx>
>
> This patch adds a second way of finding an IRQ domain associated with
> a root PCI bus. After looking to see if one can be found through
> the OF tree, it attempts to look up the IRQ domain through an
> fwnode_handle stored in the pci_sysdata struct.
>
> Signed-off-by: Jake Oshins <jakeo@xxxxxxxxxxxxx>
> ---
> drivers/pci/probe.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 750f907..c6369dd 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -674,6 +674,20 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus)
> */
> d = pci_host_bridge_of_msi_domain(bus);
>
> +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
> + /*
> + * If no IRQ domain was found via the OF tree, try looking it up
> + * directly through the fwnode_handle.
> + */
> + if (!d) {
> + struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus);
> +
> + if (fwnode)
> + d = irq_find_matching_fwnode(fwnode,
> + DOMAIN_BUS_PCI_MSI);
> + }
> +#endif
> +
> return d;
> }
>
>
Reviewed-by: Marc Zyngier <marc.zyngier@xxxxxxx>
M.
--
Jazz is not dead. It just smells funny...
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