PCI/PM: Drop unused runtime PM support code for PCIe ports

Since commit de7d5f729c72 ("PCI/PM: Disable runtime PM of PCIe ports") the
runtime PM support code for PCIe ports in portdrv_pci.c has never been
used, so drop it entirely.

If we are to support runtime PM of PCIe ports, it will have to be done in a
different way most likely anyway.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 2ccc9b9..be35da2 100644 (file)
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -93,77 +93,6 @@ static int pcie_port_resume_noirq(struct device *dev)
        return 0;
 }
 
-#ifdef CONFIG_PM_RUNTIME
-struct d3cold_info {
-       bool no_d3cold;
-       unsigned int d3cold_delay;
-};
-
-static int pci_dev_d3cold_info(struct pci_dev *pdev, void *data)
-{
-       struct d3cold_info *info = data;
-
-       info->d3cold_delay = max_t(unsigned int, pdev->d3cold_delay,
-                                  info->d3cold_delay);
-       if (pdev->no_d3cold)
-               info->no_d3cold = true;
-       return 0;
-}
-
-static int pcie_port_runtime_suspend(struct device *dev)
-{
-       struct pci_dev *pdev = to_pci_dev(dev);
-       struct d3cold_info d3cold_info = {
-               .no_d3cold      = false,
-               .d3cold_delay   = PCI_PM_D3_WAIT,
-       };
-
-       /*
-        * If any subordinate device disable D3cold, we should not put
-        * the port into D3cold.  The D3cold delay of port should be
-        * the max of that of all subordinate devices.
-        */
-       pci_walk_bus(pdev->subordinate, pci_dev_d3cold_info, &d3cold_info);
-       pdev->no_d3cold = d3cold_info.no_d3cold;
-       pdev->d3cold_delay = d3cold_info.d3cold_delay;
-       return 0;
-}
-
-static int pcie_port_runtime_resume(struct device *dev)
-{
-       return 0;
-}
-
-static int pci_dev_pme_poll(struct pci_dev *pdev, void *data)
-{
-       bool *pme_poll = data;
-
-       if (pdev->pme_poll)
-               *pme_poll = true;
-       return 0;
-}
-
-static int pcie_port_runtime_idle(struct device *dev)
-{
-       struct pci_dev *pdev = to_pci_dev(dev);
-       bool pme_poll = false;
-
-       /*
-        * If any subordinate device needs pme poll, we should keep
-        * the port in D0, because we need port in D0 to poll it.
-        */
-       pci_walk_bus(pdev->subordinate, pci_dev_pme_poll, &pme_poll);
-       /* Delay for a short while to prevent too frequent suspend/resume */
-       if (!pme_poll)
-               pm_schedule_suspend(dev, 10);
-       return -EBUSY;
-}
-#else
-#define pcie_port_runtime_suspend      NULL
-#define pcie_port_runtime_resume       NULL
-#define pcie_port_runtime_idle         NULL
-#endif
-
 static const struct dev_pm_ops pcie_portdrv_pm_ops = {
        .suspend        = pcie_port_device_suspend,
        .resume         = pcie_port_device_resume,
@@ -172,9 +101,6 @@ static const struct dev_pm_ops pcie_portdrv_pm_ops = {
        .poweroff       = pcie_port_device_suspend,
        .restore        = pcie_port_device_resume,
        .resume_noirq   = pcie_port_resume_noirq,
-       .runtime_suspend = pcie_port_runtime_suspend,
-       .runtime_resume = pcie_port_runtime_resume,
-       .runtime_idle   = pcie_port_runtime_idle,
 };
 
 #define PCIE_PORTDRV_PM_OPS    (&pcie_portdrv_pm_ops)