[PATCH v16 7/9] PCI/PORTDRV: Implement generic find device

Oza Pawandeep
2018-05-11T10:43:26Z

This patch implements generic pcie_port_find_device() routine.

Signed-off-by: Oza Pawandeep <poza@codeaurora.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>

diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index ba6c963..896608a 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -114,4 +114,6 @@ 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 d843055..bc2c337 100644
--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -20,6 +20,7 @@
#include "portdrv.h"
struct portdrv_service_data {
struct pcie_port_service_driver *drv;
+ struct device *dev;
u32 service;
};

@@ -415,6 +416,7 @@ 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;
}
}
@@ -443,6 +445,27 @@ 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 devices associated with
+ * @service: For the service to find
+ *
+ * Find PCI Express port service driver associated with given service
+ */
+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