Commit 99496bd2 authored Dec 04, 2015 by Ley Foon Tan Committed by Bjorn Helgaas Dec 04, 2015

PCI: altera: Fix error when INTx is 4



PCI interrupt lines start at 1, not at 0.  So, creates additional one
interrupt when register for irq domain.

Error when PCIe devices have 4 INTx:

  WARNING: CPU: 1 PID: 1 at kernel/irq/irqdomain.c:280
    irq_domain_associate+0x17c/0x1cc()
  error: hwirq 0x4 is too large for dummy

Tested on Ethernet adapter card with multi-functions.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

parent ea1d3795

drivers/pci/host/pcie-altera.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -467,7 +467,7 @@ static int altera_pcie_init_irq_domain(struct altera_pcie *pcie)
		struct device_node *node = dev->of_node;

		/* Setup INTx */
		pcie->irq_domain = irq_domain_add_linear(node, INTX_NUM,
		pcie->irq_domain = irq_domain_add_linear(node, INTX_NUM + 1,
		&intx_domain_ops, pcie);
		if (!pcie->irq_domain) {
		dev_err(dev, "Failed to get a INTx IRQ domain\n");