From: Bjorn Helgaas <helgaas@kernel.org>
To: linux-pci@vger.kernel.org
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
Mathias Nyman <mathias.nyman@intel.com>,
linux-pm@vger.kernel.org,
Mika Westerberg <mika.westerberg@linux.intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
linux-kernel@vger.kernel.org, Lukas Wunner <lukas@wunner.de>,
Peter Wu <peter@lekensteyn.nl>, Qipeng Zha <qipeng.zha@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andreas Noever <andreas.noever@gmail.com>,
Dave Airlie <airlied@gmail.com>, Qi Zheng <qi.zheng@intel.com>
Subject: [PATCH v1 0/2] PCI/PM: Add comments, allow PM of conventional & hotplug bridges
Date: Mon, 19 Feb 2018 17:13:53 -0600 [thread overview]
Message-ID: <151908155159.37696.9710083237704994886.stgit@bhelgaas-glaptop.roam.corp.google.com> (raw)
Add comments to help explain why the code in pci_bridge_d3_possible()
doesn't match the spec (we disallow D3 for conventional PCI bridges and for
hotplug bridges, and the spec seems to suggest that D3 could work in both
of those situations).
Make "pcie_port_pm=force" and "pcie_port_pm=off" apply to all PCI bridges
including conventional PCI bridges and hotplug bridges. This is a little
speculative. Those parameters are risky to begin with (otherwise
"pcie_port_pm=force" would be the default); this would make them more
general-purpose but obviously also even more risky.
---
Bjorn Helgaas (2):
PCI: Add PCIe port runtime suspend details
PCI: Allow user to request power management of conventional and hotplug bridges
Documentation/admin-guide/kernel-parameters.txt | 8 ++---
drivers/pci/pci.c | 40 +++++++++++++++++------
2 files changed, 34 insertions(+), 14 deletions(-)
next reply other threads:[~2018-02-19 23:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-19 23:13 Bjorn Helgaas [this message]
2018-02-19 23:14 ` [PATCH v1 1/2] PCI: Add PCIe port runtime suspend details Bjorn Helgaas
2018-02-20 9:31 ` Rafael J. Wysocki
2018-02-26 11:52 ` Mika Westerberg
2018-02-19 23:14 ` [PATCH v1 2/2] PCI: Allow user to request power management of conventional and hotplug bridges Bjorn Helgaas
2018-02-19 23:28 ` valdis.kletnieks
2018-02-20 9:41 ` Rafael J. Wysocki
2018-02-20 9:57 ` Rafael J. Wysocki
2018-02-20 18:15 ` Bjorn Helgaas
2018-02-20 19:00 ` Rafael J. Wysocki
2018-02-22 13:18 ` Lukas Wunner
2018-02-22 13:31 ` Rafael J. Wysocki
2018-02-22 17:24 ` Rafael J. Wysocki
2018-02-26 12:05 ` Mika Westerberg
2018-02-26 12:22 ` Lukas Wunner
2018-02-26 12:35 ` Mika Westerberg
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