From: Hans Zhang <hans.zhang@cixtech.com>
Modify pcie_do_recovery() to panic the system when device recovery fails
and aer_panic is enabled via kernel command-line. This addresses scenarios
where PCIe link errors cause bus hangs requiring forced reboots.
Signed-off-by: Hans Zhang <hans.zhang@cixtech.com>
---
drivers/pci/pcie/err.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c
index 31090770fffc..f0994f66d462 100644
--- a/drivers/pci/pcie/err.c
+++ b/drivers/pci/pcie/err.c
@@ -271,8 +271,12 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
pci_uevent_ers(bridge, PCI_ERS_RESULT_DISCONNECT);
- /* TODO: Should kernel panic here? */
- pci_info(bridge, "device recovery failed\n");
+ if (!pci_aer_panic_enabled())
+ pci_info(bridge, "%s: device recovery failed\n",
+ pci_name(bridge));
+ else
+ panic("Kernel panic: %s: device recovery failed\n",
+ pci_name(bridge));
return status;
}
--
2.25.1