[PATCH 5.15 26/73] Revert "PCI/portdrv: Dont disable AER reporting in get_port_device_capability()"

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

This reverts commit c968af565ca6c18b2f2af60fc1493c8db15abb3c which is
commit 8795e182b02dc87e343c79e73af6b8b7f9c5e635 upstream.

It is reported to cause problems, so drop it from the stable trees for
now until it gets sorted out.

Link: https://lore.kernel.org/r/47b775c5-57fa-5edf-b59e-8a9041ffbee7@xxxxxxxxxxxxxxx
Reported-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Cc: Stefan Roese <sr@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Pali Rohár <pali@xxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Bharat Kumar Gogada <bharat.kumar.gogada@xxxxxxxxxx>
Cc: Michal Simek <michal.simek@xxxxxxxxxx>
Cc: Yao Hongbo <yaohongbo@xxxxxxxxxxxxxxxxx>
Cc: Naveen Naidu <naveennaidu479@xxxxxxxxx>
Cc: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pci/pcie/portdrv_core.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/pci/pcie/portdrv_core.c
+++ b/drivers/pci/pcie/portdrv_core.c
@@ -222,8 +222,15 @@ static int get_port_device_capability(st
 
 #ifdef CONFIG_PCIEAER
 	if (dev->aer_cap && pci_aer_available() &&
-	    (pcie_ports_native || host->native_aer))
+	    (pcie_ports_native || host->native_aer)) {
 		services |= PCIE_PORT_SERVICE_AER;
+
+		/*
+		 * Disable AER on this port in case it's been enabled by the
+		 * BIOS (the AER service driver will enable it when necessary).
+		 */
+		pci_disable_pcie_error_reporting(dev);
+	}
 #endif
 
 	/* Root Ports and Root Complex Event Collectors may generate PMEs */