From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue, 29 May 2018 16:02:23 +0000 (+0300)
Subject: ACPI / hotplug / PCI: Mark stale PCI devices disconnected
X-Git-Tag: v4.19~864^2~19^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f004f4a34fd129622567cbec381101cc5ff7f09;p=platform%2Fkernel%2Flinux-rpi3.git

ACPI / hotplug / PCI: Mark stale PCI devices disconnected

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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index bc9e196..b526565 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);