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-rw-r--r--drivers/pci/pci-acpi.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index b1bd6e6155a..95102183805 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;