From 877b3729ca03b00800b99ac0c076e9456ef3ae6b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Wed, 3 Jan 2018 01:38:27 +0100
Subject: [PATCH] PCI / PM: Use SMART_SUSPEND and LEAVE_SUSPENDED flags for PCIe ports
Git-commit: 877b3729ca03b00800b99ac0c076e9456ef3ae6b
Patch-mainline: v4.16-rc1
References: bsc#1142623
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/pci/pcie/portdrv_pci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index ffbf4e723527..fb1c1bb87316 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -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
--
2.16.4