On Mon, Jul 21, 2014 at 02:02:23AM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <[email protected]>
>
> 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 <[email protected]>
Applied to pci/pm for v3.18, thanks!
> ---
> drivers/pci/pcie/portdrv_pci.c | 74
> -----------------------------------------
> 1 file changed, 74 deletions(-)
>
> Index: linux-pm/drivers/pci/pcie/portdrv_pci.c
> ===================================================================
> --- linux-pm.orig/drivers/pci/pcie/portdrv_pci.c
> +++ linux-pm/drivers/pci/pcie/portdrv_pci.c
> @@ -93,77 +93,6 @@ static int pcie_port_resume_noirq(struct
> 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_port
> .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)
>
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