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author | Oza Pawandeep | 2018-05-17 23:44:16 +0200 |
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committer | Bjorn Helgaas | 2018-05-17 23:49:30 +0200 |
commit | f252d0621a1102a66aa833f09531a3baec261288 (patch) | |
tree | 04ea89c4aeef5eb8d5c59605bd5ace1b75605ad5 /drivers/pci/pcie/portdrv_core.c | |
parent | PCI/AER: Factor out error reporting to drivers/pci/pcie/err.c (diff) | |
download | kernel-qcow2-linux-f252d0621a1102a66aa833f09531a3baec261288.tar.gz kernel-qcow2-linux-f252d0621a1102a66aa833f09531a3baec261288.tar.xz kernel-qcow2-linux-f252d0621a1102a66aa833f09531a3baec261288.zip |
PCI/portdrv: Add generic pcie_port_find_service()
Add generic pcie_port_find_service() routine.
Signed-off-by: Oza Pawandeep <poza@codeaurora.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'drivers/pci/pcie/portdrv_core.c')
-rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index c9c0663db282..62468d2f2056 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -19,6 +19,11 @@ #include "../pci.h" #include "portdrv.h" +struct portdrv_service_data { + struct pcie_port_service_driver *drv; + u32 service; +}; + /** * release_pcie_device - free PCI Express port service device structure * @dev: Port service device to release @@ -398,6 +403,47 @@ static int remove_iter(struct device *dev, void *data) return 0; } +static int find_service_iter(struct device *device, void *data) +{ + struct pcie_port_service_driver *service_driver; + struct portdrv_service_data *pdrvs; + u32 service; + + pdrvs = (struct portdrv_service_data *) data; + service = pdrvs->service; + + if (device->bus == &pcie_port_bus_type && device->driver) { + service_driver = to_service_driver(device->driver); + if (service_driver->service == service) { + pdrvs->drv = service_driver; + return 1; + } + } + + return 0; +} + +/** + * pcie_port_find_service - find the service driver + * @dev: PCI Express port the service is associated with + * @service: Service to find + * + * Find PCI Express port service driver associated with given service + */ +struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev, + u32 service) +{ + struct pcie_port_service_driver *drv; + struct portdrv_service_data pdrvs; + + pdrvs.drv = NULL; + pdrvs.service = service; + device_for_each_child(&dev->dev, &pdrvs, find_service_iter); + + drv = pdrvs.drv; + return drv; +} + /** * pcie_port_device_remove - unregister PCI Express port service devices * @dev: PCI Express port the service devices to unregister are associated with |