[linux-yocto] [PATCH 1/7] PCI: Don't clear d3cold_allowed for PCIe ports

Yong, Jonathan jonathan.yong at intel.com
Wed Jun 29 18:03:17 PDT 2016

From: Mika Westerberg <mika.westerberg at linux.intel.com>

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

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 at wunner.de>
Signed-off-by: Mika Westerberg <mika.westerberg at linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
Signed-off-by: Yong, Jonathan <jonathan.yong at intel.com>
 drivers/pci/pcie/portdrv_pci.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index be35da2..6c6bb03 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;
-	/*
-	 * D3cold may not work properly on some PCIe port, so disable
-	 * it by default.
-	 */
-	dev->d3cold_allowed = false;
 	return 0;

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