PCI: aardvark: Move to struct pci_host_bridge IRQ mapping functions

commit 407dae1e4415acde2d9f48bb76361893c4653756 upstream.

struct pci_host_bridge gained hooks to map/swizzle IRQs, so that the IRQ
mapping can be done automatically by PCI core code through the
pci_assign_irq() function instead of resorting to arch-specific
implementation callbacks to carry out the same task which force PCI host
bridge drivers implementation to implement per-arch kludges to carry out a
task that is inherently architecture agnostic.

Commit 769b461fc0c0 ("arm64: PCI: Drop DT IRQ allocation from
pcibios_alloc_irq()") was assuming all PCI host controller drivers had been
converted to use ->map_irq(), but that wasn't the case: pci-aardvark had
not been converted. Due to this, it broke the support for legacy PCI
interrupts when using the pci-aardvark driver (used on Marvell Armada 3720
platforms).

In order to fix this, we make sure the ->map_irq and ->swizzle_irq fields
of pci_host_bridge are properly filled in.

Fixes: 769b461fc0c0 ("arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq()")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c
index 5fb9b620ac78b684a34aea01387e98371955ac09..20f1d048582f2fe9b064101e0c2b1df61f3a1e79 100644 (file)
--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -936,6 +936,8 @@ static int advk_pcie_probe(struct platform_device *pdev)
        bridge->sysdata = pcie;
        bridge->busnr = 0;
        bridge->ops = &advk_pcie_ops;
+       bridge->map_irq = of_irq_parse_and_map_pci;
+       bridge->swizzle_irq = pci_common_swizzle;
 
        ret = pci_scan_root_bus_bridge(bridge);
        if (ret < 0) {