@@ -284,9 +284,6 @@ static int dpc_probe(struct pcie_device *dev)
int status;
u16 ctl, cap;
- if (pcie_aer_get_firmware_first(pdev) && !pcie_ports_dpc_native)
- return -ENOTSUPP;
-
status = devm_request_threaded_irq(device, dev->irq, dpc_irq,
dpc_handler, IRQF_SHARED,
"pcie-dpc", pdev);
@@ -256,7 +256,8 @@ static int get_port_device_capability(struct pci_dev *dev)
*/
if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) &&
pci_aer_available() &&
- (pcie_ports_dpc_native || (services & PCIE_PORT_SERVICE_AER)))
+ (pcie_ports_dpc_native || host->native_dpc ||
+ (services & PCIE_PORT_SERVICE_AER)))
services |= PCIE_PORT_SERVICE_DPC;
if (pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM ||
After a5bf8719af: "PCI/AER: Use only _OSC to determine AER ownership", _OSC is the primary determiner of ownership of Firmware First error handling rather than HEST. With the addition of DPC to _OSC [1], OSPM is able to negotiate DPC services from Firmware. ACPI Root Bus enumeration sets the Host Bridge's Native DPC flag on negotiation of those service. This patch changes DPC probing to check DPC control as determined by _OSC, by checking the Host Bridge's Native DPC member. As most older platforms won't have DPC negotiable by _OSC, this patch doesn't attempt to change behavior that assumes if OSPM has negotiated AER by _OSC, OSPM will also want DPC control. [1] https://members.pcisig.com/wg/PCI-SIG/document/12888 Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> --- drivers/pci/pcie/dpc.c | 3 --- drivers/pci/pcie/portdrv_core.c | 3 ++- 2 files changed, 2 insertions(+), 4 deletions(-)