add acpi_check_dsm() for DSM_PCI_POWER_ON_RESET_DELAY, DSM_PCI_DEVICE_READINESS_DURATIONS. Signed-off-by: Zhou Shengqing <zhoushengqing@xxxxxxxxxxx> --- drivers/pci/pci-acpi.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 4f9e0548c96d..47caad28a133 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -1257,6 +1257,10 @@ void acpi_pci_add_bus(struct pci_bus *bus) if (!pci_is_root_bus(bus)) return; + if (!acpi_check_dsm(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 3, + BIT(DSM_PCI_POWER_ON_RESET_DELAY))) + return; + obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 3, DSM_PCI_POWER_ON_RESET_DELAY, NULL, ACPI_TYPE_INTEGER); if (!obj) @@ -1418,6 +1422,10 @@ static void pci_acpi_optimize_delay(struct pci_dev *pdev, if (bridge->ignore_reset_delay) pdev->d3cold_delay = 0; + if (!acpi_check_dsm(handle, &pci_acpi_dsm_guid, 3, + BIT(DSM_PCI_DEVICE_READINESS_DURATIONS))) + return; + obj = acpi_evaluate_dsm_typed(handle, &pci_acpi_dsm_guid, 3, DSM_PCI_DEVICE_READINESS_DURATIONS, NULL, ACPI_TYPE_PACKAGE); -- 2.39.2
