@@ -353,14 +353,19 @@ int pcie_port_device_register(struct pci_dev *dev)
}
#ifdef CONFIG_PM
-static int suspend_iter(struct device *dev, void *data)
+typedef int (*pcie_pm_callback_t)(struct pcie_device *);
+
+static int pm_iter(struct device *dev, void *data)
{
struct pcie_port_service_driver *service_driver;
+ size_t offset = *(size_t *)data;
+ pcie_pm_callback_t cb;
if ((dev->bus == &pcie_port_bus_type) && dev->driver) {
service_driver = to_service_driver(dev->driver);
- if (service_driver->suspend)
- service_driver->suspend(to_pcie_device(dev));
+ cb = *(pcie_pm_callback_t *)((void *)service_driver + offset);
+ if (cb)
+ return cb(to_pcie_device(dev));
}
return 0;
}
@@ -371,20 +376,8 @@ static int suspend_iter(struct device *dev, void *data)
*/
int pcie_port_device_suspend(struct device *dev)
{
- return device_for_each_child(dev, NULL, suspend_iter);
-}
-
-static int resume_iter(struct device *dev, void *data)
-{
- struct pcie_port_service_driver *service_driver;
-
- if ((dev->bus == &pcie_port_bus_type) &&
- (dev->driver)) {
- service_driver = to_service_driver(dev->driver);
- if (service_driver->resume)
- service_driver->resume(to_pcie_device(dev));
- }
- return 0;
+ size_t off = offsetof(struct pcie_port_service_driver, suspend);
+ return device_for_each_child(dev, &off, pm_iter);
}
/**
@@ -393,7 +386,8 @@ static int resume_iter(struct device *dev, void *data)
*/
int pcie_port_device_resume(struct device *dev)
{
- return device_for_each_child(dev, NULL, resume_iter);
+ size_t off = offsetof(struct pcie_port_service_driver, resume);
+ return device_for_each_child(dev, &off, pm_iter);
}
#endif /* PM */
Replace suspend_iter() and resume_iter() with a single function pm_iter() to allow addition of port service callbacks for further power management phases without having to add another iterator each time. No functional change intended. Signed-off-by: Lukas Wunner <lukas@wunner.de> --- drivers/pci/pcie/portdrv_core.c | 30 ++++++++++++------------------ 1 file changed, 12 insertions(+), 18 deletions(-)