DPC and AER should attempt recovery in the same way, except the
cases where system is with hotplug enabled.
Signed-off-by: Oza Pawandeep <p...@codeaurora.org>
diff --git a/drivers/pci/pcie/pcie-dpc.c b/drivers/pci/pcie/pcie-dpc.c
index 8e1553b..6d9a841 100644
--- a/drivers/pci/pcie/pcie-dpc.c
+++ b/drivers/pci/pcie/pcie-dpc.c
@@ -108,8 +108,6 @@ static void dpc_wait_link_inactive(struct dpc_dev *dpc)
*/
static pci_ers_result_t dpc_reset_link(struct pci_dev *pdev)
{
- struct pci_bus *parent = pdev->subordinate;
- struct pci_dev *dev, *temp;
struct dpc_dev *dpc;
struct pcie_device *pciedev;
struct device *devdpc;
@@ -120,19 +118,6 @@ static pci_ers_result_t dpc_reset_link(struct pci_dev
*pdev)
dpc = get_service_data(pciedev);
cap = dpc->cap_pos;
- pci_lock_rescan_remove();
- list_for_each_entry_safe_reverse(dev, temp, &parent->devices,
- bus_list) {
- pci_dev_get(dev);
- pci_dev_set_disconnected(dev, NULL);
- if (pci_has_subordinate(dev))
- pci_walk_bus(dev->subordinate,
- pci_dev_set_disconnected, NULL);
- pci_stop_and_remove_bus_device(dev);
- pci_dev_put(dev);
- }
- pci_unlock_rescan_remove();
-
dpc_wait_link_inactive(dpc);
if (dpc->rp_extensions && dpc_wait_rp_inactive(dpc))
return PCI_ERS_RESULT_DISCONNECT;
@@ -152,13 +137,37 @@ static pci_ers_result_t dpc_reset_link(struct pci_dev
*pdev)
return PCI_ERS_RESULT_RECOVERED;
}
+static void dpc_reset_link_remove_dev(struct pci_dev *pdev)
+{
+ struct pci_bus *parent = pdev->subordinate;
+ struct pci_dev *dev, *temp;
+
+ pci_lock_rescan_remove();
+ list_for_each_entry_safe_reverse(dev, temp, &parent->devices,
+ bus_list) {
+ pci_dev_get(dev);
+ pci_dev_set_disconnected(dev, NULL);
+ if (pci_has_subordinate(dev))
+ pci_walk_bus(dev->subordinate,
+ pci_dev_set_disconnected, NULL);
+ pci_stop_and_remove_bus_device(dev);
+ pci_dev_put(dev);
+ }
+ pci_unlock_rescan_remove();
+
+ dpc_reset_link(pdev);
+}
+
static void dpc_work(struct work_struct *work)
{
struct dpc_dev *dpc = container_of(work, struct dpc_dev, work);
struct pci_dev *pdev = dpc->dev->port;
/* From DPC point of view error is always FATAL. */
- pcie_do_recovery(pdev, DPC_FATAL);
+ if (!pdev->is_hotplug_bridge)
+ pcie_do_recovery(pdev, DPC_FATAL);
+ else
+ dpc_reset_link_remove_dev(pdev);
}
static void dpc_process_rp_pio_error(struct dpc_dev *dpc)
{
--
2.7.4
