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

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Since commit de7d5f729c ("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>
This commit is contained in:
Rafael J. Wysocki 2014-07-21 02:02:23 +02:00 committed by Bjorn Helgaas
parent 52addcf9d6
commit fe9a743a26
1 changed files with 0 additions and 74 deletions
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74
drivers/pci/pcie/portdrv_pci.c
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@ -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)