PCI/MSI: Use of_msi_get_domain instead of open-coded "msi-parent" parsing
Now that we have a function that implements the complexity of the "msi-parent" property parsing, switch to that. Acked-by: Rob Herring <robh@kernel.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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@ -13,6 +13,7 @@
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/of_pci.h>
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#include "pci.h"
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@ -64,27 +65,25 @@ struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus)
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struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus)
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{
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#ifdef CONFIG_IRQ_DOMAIN
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struct device_node *np;
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struct irq_domain *d;
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if (!bus->dev.of_node)
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return NULL;
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/* Start looking for a phandle to an MSI controller. */
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np = of_parse_phandle(bus->dev.of_node, "msi-parent", 0);
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d = of_msi_get_domain(&bus->dev, bus->dev.of_node, DOMAIN_BUS_PCI_MSI);
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if (d)
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return d;
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/*
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* If we don't have an msi-parent property, look for a domain
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* directly attached to the host bridge.
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*/
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if (!np)
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np = bus->dev.of_node;
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d = irq_find_matching_host(np, DOMAIN_BUS_PCI_MSI);
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d = irq_find_matching_host(bus->dev.of_node, DOMAIN_BUS_PCI_MSI);
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if (d)
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return d;
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return irq_find_host(np);
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return irq_find_host(bus->dev.of_node);
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#else
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return NULL;
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#endif
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