[PATCH v8 1/3] PCI: portdrv: Add pcie_port_service_get_irq() function

[Kunihiko Hayashi]

Add pcie_port_service_get_irq() that returns the virtual IRQ number
for specified portdrv service.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
Reviewed-by: Rob Herring <robh at kernel.org>
---
 drivers/pci/pcie/portdrv.h      |  1 +
 drivers/pci/pcie/portdrv_core.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index af7cf23..e256456 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -150,4 +150,5 @@ static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
 #endif /* !CONFIG_PCIE_PME */
 
 struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);
+int pcie_port_service_get_irq(struct pci_dev *dev, u32 service);
 #endif /* _PORTDRV_H_ */
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
index 50a9522..f92daf8 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -480,6 +480,22 @@ struct device *pcie_port_find_device(struct pci_dev *dev,
 }
 EXPORT_SYMBOL_GPL(pcie_port_find_device);
 
+/*
+ * pcie_port_service_get_irq - get irq of the service
+ * @dev: PCI Express port the service is associated with
+ * @service: For the service to find
+ *
+ * Get irq number associated with given service on a pci_dev
+ */
+int pcie_port_service_get_irq(struct pci_dev *dev, u32 service)
+{
+	struct pcie_device *pciedev;
+
+	pciedev = to_pcie_device(pcie_port_find_device(dev, service));
+
+	return pciedev->irq;
+}
+
 /**
  * pcie_port_device_remove - unregister PCI Express port service devices
  * @dev: PCI Express port the service devices to unregister are associated with
-- 
2.7.4