From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>,
Mario.Limonciello@dell.com,
Michael Jamet <michael.jamet@intel.com>,
Yehezkel Bernat <yehezkel.bernat@intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: [PATCH 5/5] ACPI / hotplug / PCI: Mark stale PCI devices disconnected
Date: Tue, 13 Feb 2018 19:32:00 +0300 [thread overview]
Message-ID: <20180213163200.8787-6-mika.westerberg@linux.intel.com> (raw)
In-Reply-To: <20180213163200.8787-1-mika.westerberg@linux.intel.com>
Following PCIehp mark the unplugged PCI devices disconnected. This makes
sure PCI core code leaves the now missing hardware registers alone.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/pci/hotplug/acpiphp_glue.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 5efa21cdddc9..0aef35ee665a 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -651,6 +651,11 @@ static void trim_stale_devices(struct pci_dev *dev)
alive = pci_device_is_present(dev);
if (!alive) {
+ pci_dev_set_disconnected(dev, NULL);
+ if (pci_has_subordinate(dev))
+ pci_walk_bus(dev->subordinate, pci_dev_set_disconnected,
+ NULL);
+
pci_stop_and_remove_bus_device(dev);
if (adev)
acpi_bus_trim(adev);
--
2.15.1
next prev parent reply other threads:[~2018-02-13 16:32 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-13 16:31 [PATCH 0/5] PCI: Fixes for native PCIe and ACPI hotplug Mika Westerberg
2018-02-13 16:31 ` [PATCH 1/5] PCI: Make sure all bridges reserve at least one bus number Mika Westerberg
2018-02-13 17:43 ` Rafael J. Wysocki
2018-02-14 9:47 ` Mika Westerberg
2018-02-13 16:31 ` [PATCH 2/5] PCI: Take bridge window alignment into account when distributing resources Mika Westerberg
2018-02-13 17:45 ` Rafael J. Wysocki
2018-02-13 16:31 ` [PATCH 3/5] PCI: pciehp: Clear Presence Detect and Data Link Layer Status Changed on resume Mika Westerberg
2018-02-13 17:46 ` Rafael J. Wysocki
2018-02-13 16:31 ` [PATCH 4/5] ACPI / hotplug / PCI: Do not scan all bridges when native PCIe hotplug is used Mika Westerberg
2018-02-13 17:51 ` Rafael J. Wysocki
2018-02-13 16:32 ` Mika Westerberg [this message]
2018-02-13 17:51 ` [PATCH 5/5] ACPI / hotplug / PCI: Mark stale PCI devices disconnected Rafael J. Wysocki
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