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Code Issues Releases Wiki Activity

PCI / PM: Use SMART_SUSPEND and LEAVE_SUSPENDED flags for PCIe ports 

Make the PCIe port driver set DPM_FLAG_SMART_SUSPEND and
DPM_FLAG_LEAVE_SUSPENDED for the devices handled by it to benefit
from the opportunistic optimizations in the PCI layer enabled by
these flags.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rafael J. Wysocki 2018-01-03 01:38:27 +01:00
parent cf04ce7841
commit 877b3729ca
1 changed files with 3 additions and 0 deletions
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3
drivers/pci/pcie/portdrv_pci.c
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@ -150,6 +150,9 @@ static int pcie_portdrv_probe(struct pci_dev *dev,
pci_save_state(dev);
dev_pm_set_driver_flags(&dev->dev, DPM_FLAG_SMART_SUSPEND |
DPM_FLAG_LEAVE_SUSPENDED);
if (pci_bridge_d3_possible(dev)) {
/*
* Keep the port resumed 100ms to make sure things like