diff options
Diffstat (limited to 'drivers/pci/pcie/portdrv_pci.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 0761d90ca279..08c243ab034e 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -134,10 +134,28 @@ 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 */ - pm_schedule_suspend(dev, 10); + if (!pme_poll) + pm_schedule_suspend(dev, 10); return -EBUSY; } #else @@ -182,7 +200,7 @@ static const struct pci_device_id port_runtime_pm_black_list[] = { * this port device. * */ -static int __devinit pcie_portdrv_probe(struct pci_dev *dev, +static int pcie_portdrv_probe(struct pci_dev *dev, const struct pci_device_id *id) { int status; |