[PATCHv2 7/7] PCI/DPC: Print AER status in DPC event handling

[Keith Busch <keith.busch@intel.com>]

A DPC enabled device suppresses ERR_(NON)FATAL messages, preventing the
AER handler from reporting error details. If the DPC trigger reason says
the downstream port detected the error, this patch has the DPC driver
collect the AER uncorrectable status for logging, then clears the status.

Signed-off-by: Keith Busch <keith.busch@intel.com>
---
 drivers/pci/pcie/pcie-dpc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c
index e12837ee4f1c..76f963a5089e 100644
--- a/drivers/pci/pcie/pcie-dpc.c
+++ b/drivers/pci/pcie/pcie-dpc.c
@@ -85,6 +85,7 @@ static void dpc_wait_link_inactive(struct dpc_dev *dpc)
 
 static void dpc_work(struct work_struct *work)
 {
+	struct aer_err_info info;
 	struct dpc_dev *dpc = container_of(work, struct dpc_dev, work);
 	struct pci_dev *dev, *temp, *pdev = dpc->dev->port;
 	struct pci_bus *parent = pdev->subordinate;
@@ -108,8 +109,12 @@ static void dpc_work(struct work_struct *work)
 		 (ext_reason == 1) ? "software trigger" :
 				     "reserved error");
 
-	if (dpc->rp_extensions && reason == 3 && ext_reason == 0)
+	if (dpc->rp_extensions && reason == 3 && ext_reason == 0) {
 		pio_status = dpc_process_rp_pio_error(dpc);
+	} else if (reason == 0 && aer_get_device_error_info(pdev, &info)) {
+		aer_print_error(pdev, &info);
+		pci_cleanup_aer_uncorrect_error_status(pdev);
+	}
 
 	pci_lock_rescan_remove();
 	list_for_each_entry_safe_reverse(dev, temp, &parent->devices,
-- 
2.14.3