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

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Date:   Wed, 14 Nov 2018 20:17:57 +0530
From:   Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
To:     <linux-kernel@...r.kernel.org>
CC:     <bhelgaas@...gle.com>, <rgummal@...inx.com>,
        Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
Subject: [PATCH v2 3/4] PCI/portdrv: Check platform supported service IRQ's

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@...inx.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 f458ac9..8e37beb 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -330,6 +330,14 @@ int pcie_port_device_register(struct pci_dev *dev)
 			goto error_disable;
 	}
 
+	/*
+	 * 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;
-- 
2.7.4