PCI/AER: Clear error status registers during enumeration and restore
AER errors might be recorded when powering-on devices. These errors can be
ignored, so firmware usually clears them before the OS enumerates devices.
However, firmware is not involved when devices are added via hotplug, so
the OS may discover power-up errors that should be ignored. The same may
happen when powering up devices when resuming after suspend.
Clear the AER error status registers during enumeration and resume.
[bhelgaas: changelog, remove repetitive comments]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0b2be17..8cd9710 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/cpumask.h>
#include <linux/pci-aspm.h>
+#include <linux/aer.h>
#include <asm-generic/pci-bridge.h>
#include "pci.h"
@@ -1621,6 +1622,8 @@
/* Enable ACS P2P upstream forwarding */
pci_enable_acs(dev);
+
+ pci_cleanup_aer_error_status_regs(dev);
}
static void pci_set_msi_domain(struct pci_dev *dev)