From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Qipeng Zha <qipeng.zha@intel.com>, Qi Zheng <qi.zheng@intel.com>,
Dave Airlie <airlied@gmail.com>,
Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Lukas Wunner <lukas@wunner.de>,
Andreas Noever <andreas.noever@gmail.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
linux-pci@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH v3 1/4] PCI: No need to set d3cold_allowed to PCIe ports
Date: Thu, 14 Apr 2016 13:04:25 +0300 [thread overview]
Message-ID: <1460628268-16204-2-git-send-email-mika.westerberg@linux.intel.com> (raw)
In-Reply-To: <1460628268-16204-1-git-send-email-mika.westerberg@linux.intel.com>
The Linux PCI core skips PCI bridges and PCIe ports when 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.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.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 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;
}
--
2.8.0.rc3
next prev parent reply other threads:[~2016-04-14 10:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 10:04 [PATCH v3 0/4] PCI: Add support for suspending (including runtime) of PCIe ports Mika Westerberg
2016-04-14 10:04 ` Mika Westerberg [this message]
2016-04-14 10:04 ` [PATCH v3 2/4] PCI: Move PCIe ports to D3 during suspend Mika Westerberg
2016-04-14 10:04 ` [PATCH v3 3/4] ACPI / hotplug / PCI: Runtime resume bridge before rescan Mika Westerberg
2016-04-14 10:04 ` [PATCH v3 4/4] PCI: Add runtime PM support for PCIe ports Mika Westerberg
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