[PATCH v7 4/4] misc: pci_endpoint_test: Add AER error handlers

[Manivannan Sadhasivam via B4 Relay]

From: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>

This Endpoint test driver doesn't need to do anything fancy in its error
handlers, but just report the correct result. This helps in making sure
that the AER recovery succeeds. Otherwise, AER recovery results in below
log:

 AER: device recovery failed

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam at oss.qualcomm.com>
---
 drivers/misc/pci_endpoint_test.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 74ab5b5b9011..4024fd72fc66 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -1422,12 +1422,32 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, pci_endpoint_test_tbl);
 
+static pci_ers_result_t pci_endpoint_test_error_detected(struct pci_dev *pdev,
+					      pci_channel_state_t state)
+{
+	if (state == pci_channel_io_perm_failure)
+		return PCI_ERS_RESULT_DISCONNECT;
+
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+static pci_ers_result_t pci_endpoint_test_slot_reset(struct pci_dev *pdev)
+{
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+static const struct pci_error_handlers pci_endpoint_test_err_handler = {
+	.error_detected = pci_endpoint_test_error_detected,
+	.slot_reset = pci_endpoint_test_slot_reset,
+};
+
 static struct pci_driver pci_endpoint_test_driver = {
 	.name		= DRV_MODULE_NAME,
 	.id_table	= pci_endpoint_test_tbl,
 	.probe		= pci_endpoint_test_probe,
 	.remove		= pci_endpoint_test_remove,
 	.sriov_configure = pci_sriov_configure_simple,
+	.err_handler    = &pci_endpoint_test_err_handler,
 };
 module_pci_driver(pci_endpoint_test_driver);
 

-- 
2.51.0