From e76d596aef0caa7296e42e29a0a81bc4155807df Mon Sep 17 00:00:00 2001 From: Oza Pawandeep Date: Thu, 17 May 2018 16:44:17 -0500 Subject: [PATCH] PCI/portdrv: Add generic pcie_port_find_device() Add generic pcie_port_find_device() routine. Signed-off-by: Oza Pawandeep Signed-off-by: Bjorn Helgaas Reviewed-by: Keith Busch --- drivers/pci/pcie/portdrv.h | 1 + drivers/pci/pcie/portdrv_core.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index ba6c963..d82401a 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -114,4 +114,5 @@ static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {} struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev, u32 service); +struct device *pcie_port_find_device(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 62468d2..a9c581d 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -21,6 +21,7 @@ struct portdrv_service_data { struct pcie_port_service_driver *drv; + struct device *dev; u32 service; }; @@ -416,6 +417,7 @@ static int find_service_iter(struct device *device, void *data) service_driver = to_service_driver(device->driver); if (service_driver->service == service) { pdrvs->drv = service_driver; + pdrvs->dev = device; return 1; } } @@ -445,6 +447,27 @@ struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev, } /** + * pcie_port_find_device - find the struct device + * @dev: PCI Express port the service is associated with + * @service: For the service to find + * + * Find the struct device associated with given service on a pci_dev + */ +struct device *pcie_port_find_device(struct pci_dev *dev, + u32 service) +{ + struct device *device; + struct portdrv_service_data pdrvs; + + pdrvs.dev = NULL; + pdrvs.service = service; + device_for_each_child(&dev->dev, &pdrvs, find_service_iter); + + device = pdrvs.dev; + return device; +} + +/** * 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