[PATCH 11/11] RFC: ARM: get PCI device IRQs from device tree

[arnd@arndb.de (Arnd Bergmann)]

On Thursday 04 April 2013, Linus Walleij wrote:
> This adds the interrupt-map property to the PCIv3 DTS file
> and makes the bridge obtain mappings from the device tree.
> 
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> This currently bugs out - when trying to get the IRQs for
> devices of_irq_map_pci() reads the IRQ pin from the PCI config
> space successfully, then comes to trying to look up the parent
> PCI device by checking pdev->bus->self, which is NULL, then
> tries to treat it as a bridge doing pci_bus_to_OF_node(pdev->bus)
> which also results in NULL and it bails out.
> 
> No clue why this is so - some problem with the parent of this
> bus not being a PCI device in itself? Help.

All the PowerPC implementations I remember had the PCI bus
as a device under the root node. It's very possible that it's
just a bug in of_irq_map_pci().

	Arnd