From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Thu, 2 Jun 2016 08:17:11 +0000 (+0300)
Subject: PCI: Don't clear d3cold_allowed for PCIe ports
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=43f7f88b9362e1f26603b45932069bbd6e15a1e1;p=linux-beck.git

PCI: Don't clear d3cold_allowed for PCIe ports

The PCI core skips bridges and ports when the system is suspended.  The PCI
core checks return value of pci_has_subordinate() in pci_pm_suspend_noirq()
to skip all devices where it is non-zero (which means PCI bridges and PCIe
ports).

Since PCIe ports are never suspended in the first place, there is no need
to set d3cold_allowed for them.

Tested-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index be35da2e105e..6c6bb03392ea 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -134,11 +134,6 @@ static int pcie_portdrv_probe(struct pci_dev *dev,
 		return status;
 
 	pci_save_state(dev);
-	/*
-	 * D3cold may not work properly on some PCIe port, so disable
-	 * it by default.
-	 */
-	dev->d3cold_allowed = false;
 	return 0;
 }