From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> As per PCI firmware specification r3.2 System Firmware Intermediary (SFI) _OSC and DPC Updates ECR (https://members.pcisig.com/wg/PCI-SIG/document/13563), sec titled "DPC Event Handling Implementation Note", page 10, OS is responsible for clearing the AER registers in EDR mode. So clear AER registers in dpc_process_error() function. Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> Acked-by: Keith Busch <keith.busch@xxxxxxxxx> --- drivers/pci/pcie/dpc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index db2e5cb635d7..588ae4f99781 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -284,6 +284,10 @@ static void dpc_process_error(struct dpc_dev *dpc) pci_aer_clear_fatal_status(pdev, 0); } + /* In EDR mode, OS is responsible for clearing AER registers */ + if (pcie_aer_get_firmware_first(pdev)) + pci_cleanup_aer_error_status_regs(pdev, 0); + /* * Irrespective of whether the DPC event is triggered by * ERR_FATAL or ERR_NONFATAL, since the link is already down, -- 2.21.0
