diff options
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer.c | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6cfa6e3996cf..ecdb9530af8a 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4296,7 +4296,9 @@ specified, e.g., 12@pci:8086:9c22:103c:198f for 4096-byte alignment. ecrc= Enable/disable PCIe ECRC (transaction layer - end-to-end CRC checking). + end-to-end CRC checking). Only effective if + OS has native AER control (either granted by + ACPI _OSC or forced via "pcie_ports=native") bios: Use BIOS/firmware settings. This is the the default. off: Turn ECRC off diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 625f7b2cafe4..d7ee79d7b192 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -184,6 +184,9 @@ static int disable_ecrc_checking(struct pci_dev *dev) */ void pcie_set_ecrc_checking(struct pci_dev *dev) { + if (!pcie_aer_is_native(dev)) + return; + switch (ecrc_policy) { case ECRC_POLICY_DEFAULT: return; |