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arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq()
With the introduction of struct pci_host_bridge.map_irq pointer it is possible to assign IRQs for all devices originating from a PCI host bridge at probe time; this is implemented through pci_assign_irq() that relies on the struct pci_host_bridge.map_irq pointer to map IRQ for a given device. The benefits this brings are twofold: - the IRQ for a device is assigned once at probe time - the IRQ assignment works also for hotplugged devices With all DT based PCI host bridges converted to the struct pci_host_bridge.{map/swizzle}_irq hooks mechanism the DT IRQ allocation in ARM64 pcibios_alloc_irq() is now redundant and can be removed. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Will Deacon <will.deacon@arm.com>
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1 changed files with 4 additions and 6 deletions
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@ -39,20 +39,18 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
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return res->start;
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}
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#ifdef CONFIG_ACPI
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/*
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* Try to assign the IRQ number when probing a new device
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*/
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int pcibios_alloc_irq(struct pci_dev *dev)
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{
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if (acpi_disabled)
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dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
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#ifdef CONFIG_ACPI
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else
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return acpi_pci_irq_enable(dev);
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#endif
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if (!acpi_disabled)
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acpi_pci_irq_enable(dev);
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return 0;
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}
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#endif
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/*
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* raw_pci_read/write - Platform-specific PCI config space access.
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