From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> As per PCI firmware specification r3.2 Downstream Port Containment Related Enhancements ECN, 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 fafc55c00fe0..de2d892bc7c4 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -275,6 +275,10 @@ static void dpc_process_error(struct dpc_dev *dpc) pci_aer_clear_fatal_status(pdev); } + /* In EDR mode, OS is responsible for clearing AER registers */ + if (dpc->firmware_dpc) + pci_cleanup_aer_error_status_regs(pdev); + /* * Irrespective of whether the DPC event is triggered by * ERR_FATAL or ERR_NONFATAL, since the link is already down, -- 2.21.0
