From: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx>
Add support for the device tree binding update. As part of
converting the binding document from text to yaml, with schema
validation, a device tree subnode was added to properly map
legacy interrupts. Maintain backward compatibility with previous binding.
Signed-off-by: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx>
---
drivers/pci/controller/pcie-altera.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
index a9536dc4bf96..88511fa2f078 100644
--- a/drivers/pci/controller/pcie-altera.c
+++ b/drivers/pci/controller/pcie-altera.c
@@ -667,11 +667,20 @@ static void altera_pcie_isr(struct irq_desc *desc)
static int altera_pcie_init_irq_domain(struct altera_pcie *pcie)
{
struct device *dev = &pcie->pdev->dev;
- struct device_node *node = dev->of_node;
+ struct device_node *node, *child;
/* Setup INTx */
+ child = of_get_next_child(dev->of_node, NULL);
+ if (child)
+ node = child;
+ else
+ node = dev->of_node;
+
pcie->irq_domain = irq_domain_add_linear(node, PCI_NUM_INTX,
- &intx_domain_ops, pcie);
+ &intx_domain_ops, pcie);
+ if (child)
+ of_node_put(child);
+
if (!pcie->irq_domain) {
dev_err(dev, "Failed to get a INTx IRQ domain\n");
return -ENOMEM;
--
2.34.1
