From: Greg Kroah-Hartman gregkh@linuxfoundation.org
From: Keith Busch kbusch@kernel.org
[ Upstream commit 387c72cdd7fb6bef650fb078d0f6ae9682abf631 ]
Overwriting the frozen detected status with the result of the link reset loses the NEED_RESET result that drivers are depending on for error handling to report the .slot_reset() callback. Retain this status so that subsequent error handling has the correct flow.
Link: https://lore.kernel.org/r/20210104230300.1277180-4-kbusch@kernel.org Reported-by: Hinko Kocevar hinko.kocevar@ess.eu Tested-by: Hedi Berriche hedi.berriche@hpe.com Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Acked-by: Sean V Kelley sean.v.kelley@intel.com Acked-by: Hedi Berriche hedi.berriche@hpe.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/pcie/err.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c index 510f31f0ef6d..4798bd6de97d 100644 --- a/drivers/pci/pcie/err.c +++ b/drivers/pci/pcie/err.c @@ -198,8 +198,7 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev, pci_dbg(bridge, "broadcast error_detected message\n"); if (state == pci_channel_io_frozen) { pci_walk_bridge(bridge, report_frozen_detected, &status); - status = reset_subordinates(bridge); - if (status != PCI_ERS_RESULT_RECOVERED) { + if (reset_subordinates(bridge) != PCI_ERS_RESULT_RECOVERED) { pci_warn(bridge, "subordinate device reset failed\n"); goto failed; }