Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

Pull core irq updates from Thomas Gleixner:
 "The irq department delivers:

   - Another tree wide update to get rid of the horrible create_irq
     interface along with its even more horrible variants.  That also
     gets rid of the last leftovers of the initial sparse irq hackery.
     arch/driver specific changes have been either acked or ignored.

   - A fix for the spurious interrupt detection logic with threaded
     interrupts.

   - A new ARM SoC interrupt controller

   - The usual pile of fixes and improvements all over the place"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  Documentation: brcmstb-l2: Add Broadcom STB Level-2 interrupt controller binding
  irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller
  genirq: Improve documentation to match current implementation
  ARM: iop13xx: fix msi support with sparse IRQ
  genirq: Provide !SMP stub for irq_set_affinity_notifier()
  irqchip: armada-370-xp: Move the devicetree binding documentation
  irqchip: gic: Use mask field in GICC_IAR
  genirq: Remove dynamic_irq mess
  ia64: Use irq_init_desc
  genirq: Replace dynamic_irq_init/cleanup
  genirq: Remove irq_reserve_irq[s]
  genirq: Replace reserve_irqs in core code
  s390: Avoid call to irq_reserve_irqs()
  s390: Remove pointless arch_show_interrupts()
  s390: pci: Check return value of alloc_irq_desc() proper
  sh: intc: Remove pointless irq_reserve_irqs() invocation
  x86, irq: Remove pointless irq_reserve_irqs() call
  genirq: Make create/destroy_irq() ia64 private
  tile: Use SPARSE_IRQ
  tile: pci: Use irq_alloc/free_hwirq()
  ...

drivers/iommu/dmar.c

@@ -994,7 +994,7 @@ static void free_iommu(struct intel_iommu *iommu)
 	if (iommu->irq) {
 		free_irq(iommu->irq, iommu);
 		irq_set_handler_data(iommu->irq, NULL);
-		destroy_irq(iommu->irq);
+		dmar_free_hwirq(iommu->irq);
 	}
 
 	if (iommu->qi) {
@@ -1550,8 +1550,8 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
 	if (iommu->irq)
 		return 0;
 
-	irq = create_irq();
-	if (!irq) {
+	irq = dmar_alloc_hwirq();
+	if (irq <= 0) {
 		pr_err("IOMMU: no free vectors\n");
 		return -EINVAL;
 	}
@@ -1563,7 +1563,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
 	if (ret) {
 		irq_set_handler_data(irq, NULL);
 		iommu->irq = 0;
-		destroy_irq(irq);
+		dmar_free_hwirq(irq);
 		return ret;
 	}
 

drivers/iommu/irq_remapping.c

@@ -51,7 +51,7 @@ static void irq_remapping_disable_io_apic(void)
 
 static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
 {
-	int node, ret, sub_handle, nvec_pow2, index = 0;
+	int ret, sub_handle, nvec_pow2, index = 0;
 	unsigned int irq;
 	struct msi_desc *msidesc;
 
@@ -61,8 +61,7 @@ static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
 	WARN_ON(msidesc->msi_attrib.multiple);
 	WARN_ON(msidesc->nvec_used);
 
-	node = dev_to_node(&dev->dev);
-	irq = __create_irqs(get_nr_irqs_gsi(), nvec, node);
+	irq = irq_alloc_hwirqs(nvec, dev_to_node(&dev->dev));
 	if (irq == 0)
 		return -ENOSPC;
 
@@ -89,7 +88,7 @@ static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
 	return 0;
 
 error:
-	destroy_irqs(irq, nvec);
+	irq_free_hwirqs(irq, nvec);
 
 	/*
 	 * Restore altered MSI descriptor fields and prevent just destroyed
@@ -109,12 +108,11 @@ static int do_setup_msix_irqs(struct pci_dev *dev, int nvec)
 	unsigned int irq;
 
 	node		= dev_to_node(&dev->dev);
-	irq		= get_nr_irqs_gsi();
 	sub_handle	= 0;
 
 	list_for_each_entry(msidesc, &dev->msi_list, list) {
 
-		irq = create_irq_nr(irq, node);
+		irq = irq_alloc_hwirq(node);
 		if (irq == 0)
 			return -1;
 
@@ -137,7 +135,7 @@ static int do_setup_msix_irqs(struct pci_dev *dev, int nvec)
 	return 0;
 
 error:
-	destroy_irq(irq);
+	irq_free_hwirq(irq);
 	return ret;
 }