diff options
| -rw-r--r-- | drivers/pci/pci-acpi.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 736bb248008..3582512e722 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -24,15 +24,14 @@ struct acpi_osc_data { acpi_handle handle; u32 support_set; u32 control_set; + u32 control_query; int is_queried; - u32 query_result; struct list_head sibiling; }; static LIST_HEAD(acpi_osc_data_list); struct acpi_osc_args { u32 capbuf[3]; - u32 query_result; }; static DEFINE_MUTEX(pci_acpi_lock); @@ -58,7 +57,7 @@ static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66}; static acpi_status acpi_run_osc(acpi_handle handle, - struct acpi_osc_args *osc_args) + struct acpi_osc_args *osc_args, u32 *retval) { acpi_status status; struct acpi_object_list input; @@ -114,9 +113,7 @@ static acpi_status acpi_run_osc(acpi_handle handle, goto out_kfree; } out_success: - if (flags & OSC_QUERY_ENABLE) - osc_args->query_result = - *((u32 *)(out_obj->buffer.pointer + 8)); + *retval = *((u32 *)(out_obj->buffer.pointer + 8)); status = AE_OK; out_kfree: @@ -127,7 +124,7 @@ out_kfree: static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data) { acpi_status status; - u32 support_set; + u32 support_set, result; struct acpi_osc_args osc_args; /* do _OSC query for all possible controls */ @@ -136,10 +133,10 @@ static acpi_status __acpi_query_osc(u32 flags, struct acpi_osc_data *osc_data) osc_args.capbuf[OSC_SUPPORT_TYPE] = support_set; osc_args.capbuf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS; - status = acpi_run_osc(osc_data->handle, &osc_args); + status = acpi_run_osc(osc_data->handle, &osc_args, &result); if (ACPI_SUCCESS(status)) { osc_data->support_set = support_set; - osc_data->query_result = osc_args.query_result; + osc_data->control_query = result; osc_data->is_queried = 1; } @@ -187,7 +184,7 @@ out: acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) { acpi_status status; - u32 ctrlset, control_set; + u32 control_req, control_set, result; acpi_handle tmp; struct acpi_osc_data *osc_data; struct acpi_osc_args osc_args; @@ -204,14 +201,14 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) goto out; } - ctrlset = (flags & OSC_CONTROL_MASKS); - if (!ctrlset) { + control_req = (flags & OSC_CONTROL_MASKS); + if (!control_req) { status = AE_TYPE; goto out; } /* No need to evaluate _OSC if the control was already granted. */ - if ((osc_data->control_set & ctrlset) == ctrlset) + if ((osc_data->control_set & control_req) == control_req) goto out; if (!osc_data->is_queried) { @@ -220,18 +217,18 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) goto out; } - if ((osc_data->query_result & ctrlset) != ctrlset) { + if ((osc_data->control_query & control_req) != control_req) { status = AE_SUPPORT; goto out; } - control_set = osc_data->control_set | ctrlset; + control_set = osc_data->control_set | control_req; osc_args.capbuf[OSC_QUERY_TYPE] = 0; osc_args.capbuf[OSC_SUPPORT_TYPE] = osc_data->support_set; osc_args.capbuf[OSC_CONTROL_TYPE] = control_set; - status = acpi_run_osc(handle, &osc_args); + status = acpi_run_osc(handle, &osc_args, &result); if (ACPI_SUCCESS(status)) - osc_data->control_set = control_set; + osc_data->control_set = result; out: mutex_unlock(&pci_acpi_lock); return status; |