PCI: revert additional _OSC evaluation
Revertsadf411b819
. The commitadf411b819
was based on the improper assumption that queried result was not updated when _OSC support field was changed. But, in fact, queried result is updated whenever _OSC support field was changed through __acpi_query_osc(). As a result, the commitadf411b819
only introduced unnecessary additional _OSC evaluation... Tested-by: Andrew Patterson <andrew.patterson@hp.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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4ba7d0f0eb
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@ -24,13 +24,15 @@ struct acpi_osc_data {
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acpi_handle handle;
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u32 support_set;
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u32 control_set;
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int is_queried;
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u32 query_result;
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struct list_head sibiling;
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};
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static LIST_HEAD(acpi_osc_data_list);
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struct acpi_osc_args {
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u32 capbuf[3];
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u32 ctrl_result;
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u32 query_result;
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};
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static DEFINE_MUTEX(pci_acpi_lock);
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@ -112,8 +114,9 @@ static acpi_status acpi_run_osc(acpi_handle handle,
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goto out_kfree;
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}
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out_success:
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osc_args->ctrl_result =
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*((u32 *)(out_obj->buffer.pointer + 8));
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if (flags & OSC_QUERY_ENABLE)
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osc_args->query_result =
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*((u32 *)(out_obj->buffer.pointer + 8));
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status = AE_OK;
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out_kfree:
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@ -121,8 +124,7 @@ out_kfree:
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return status;
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}
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static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data,
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u32 *result)
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static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data)
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{
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acpi_status status;
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u32 support_set;
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@ -137,7 +139,8 @@ static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data,
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status = acpi_run_osc(osc_data->handle, &osc_args);
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if (ACPI_SUCCESS(status)) {
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osc_data->support_set = support_set;
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*result = osc_args.ctrl_result;
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osc_data->query_result = osc_args.query_result;
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osc_data->is_queried = 1;
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}
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return status;
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@ -151,7 +154,6 @@ static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data,
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*/
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int pci_acpi_osc_support(acpi_handle handle, u32 flags)
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{
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u32 dummy;
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acpi_status status;
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acpi_handle tmp;
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struct acpi_osc_data *osc_data;
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@ -169,7 +171,7 @@ int pci_acpi_osc_support(acpi_handle handle, u32 flags)
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goto out;
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}
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__acpi_query_osc(flags, osc_data, &dummy);
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__acpi_query_osc(flags, osc_data);
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out:
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mutex_unlock(&pci_acpi_lock);
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return rc;
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@ -185,7 +187,7 @@ out:
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acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
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{
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acpi_status status;
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u32 ctrlset, control_set, result;
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u32 ctrlset, control_set;
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acpi_handle tmp;
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struct acpi_osc_data *osc_data;
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struct acpi_osc_args osc_args;
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@ -208,11 +210,13 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
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goto out;
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}
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status = __acpi_query_osc(osc_data->support_set, osc_data, &result);
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if (ACPI_FAILURE(status))
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goto out;
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if (!osc_data->is_queried) {
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status = __acpi_query_osc(osc_data->support_set, osc_data);
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if (ACPI_FAILURE(status))
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goto out;
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}
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if ((result & ctrlset) != ctrlset) {
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if ((osc_data->query_result & ctrlset) != ctrlset) {
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status = AE_SUPPORT;
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goto out;
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}
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