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misc: pci_endpoint_test: Add AER error handlers

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The Endpoint test driver doesn't need to do anything fancy in its error
handlers; just restore the config space that was saved during probe and
report the correct result. This helps in making sure that the AER recovery
succeeds.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260729-pci-port-reset-v9-5-53570b92064d@oss.qualcomm.com
This commit is contained in:
Manivannan Sadhasivam
2026-07-29 10:22:31 +05:30
committed by Bjorn Helgaas
parent b376b3ff9c
commit 29e179cb7f
1 changed files with 23 additions and 0 deletions
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23
drivers/misc/pci_endpoint_test.c
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@@ -1325,6 +1325,8 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
misc_device->parent = &pdev->dev;
misc_device->fops = &pci_endpoint_test_fops;
pci_save_state(pdev);
ret = misc_register(misc_device);
if (ret) {
dev_err(dev, "Failed to register device\n");
@@ -1452,12 +1454,33 @@ 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)
{
pci_restore_state(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);