diff options
| -rw-r--r-- | drivers/pci/pci-acpi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index b1bd6e6155a3..951021838055 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -23,6 +23,7 @@ struct acpi_osc_data { acpi_handle handle; u32 support_set; u32 control_set; + int is_queried; u32 query_result; struct list_head sibiling; }; @@ -147,6 +148,7 @@ static acpi_status acpi_query_osc(acpi_handle handle, if (ACPI_SUCCESS(status)) { osc_data->support_set = support_set; osc_data->query_result = osc_args.query_result; + osc_data->is_queried = 1; } return status; @@ -203,7 +205,7 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) if (!ctrlset) return AE_TYPE; - if (osc_data->support_set && + if (osc_data->is_queried && ((osc_data->query_result & ctrlset) != ctrlset)) return AE_SUPPORT; |