[RESEND PATCH v2 3/4] PCI/portdrv: Check platform supported service IRQ's

Stefan Roese
2022-01-12T09:43:02Z

From: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>

Platforms may have dedicated IRQ lines for PCIe services like
AER/PME etc., check for such IRQ lines.
Check if platform has any dedicated IRQ lines for PCIe
services.

Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Pali Rohár <pali@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
---
drivers/pci/pcie/portdrv_core.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index bda630889f95..70dd45671ed8 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -358,6 +358,14 @@ int pcie_port_device_register(struct pci_dev *dev)
}
}

+ /*
+ * Some platforms have dedicated interrupt line from root complex to
+ * interrupt controller for PCIe services like AER/PME etc., check
+ * if platform registered with any such IRQ.
+ */
+ if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
+ pci_check_platform_service_irqs(dev, irqs, capabilities);
+
/* Allocate child services if any */
status = -ENODEV;
nr_service = 0;
--
2.34.1