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[v6,08/12] ACPI / hotplug / PCI: Mark stale PCI devices disconnected

Message ID 20180510182844.77349-9-mika.westerberg@linux.intel.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Mika Westerberg May 10, 2018, 6:28 p.m. UTC 
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>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pci/hotplug/acpiphp_glue.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index a8286058f490..db256bb2bd6a 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -649,6 +649,11 @@  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);