static int msi_wmi_query_block(int instance, int *ret)
{
acpi_status status;
union acpi_object *obj;
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
status = wmi_query_block(MSIWMI_BIOS_GUID, instance, &output);
obj = output.pointer;
if (!obj || obj->type != ACPI_TYPE_INTEGER) {
if (obj) {
printk(KERN_ERR DRV_PFX "query block returned object "
"type: %d - buffer length:%d\n", obj->type,
obj->type == ACPI_TYPE_BUFFER ?
obj->buffer.length : 0);
}
kfree(obj);
return -EINVAL;
}
*ret = obj->integer.value;
kfree(obj);
return 0;
}
static int thinkpad_wmi_bios_setting(int item, char **value)
{
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
acpi_status status;
status = wmi_query_block(LENOVO_BIOS_SETTING_GUID, item, &output);
if (ACPI_FAILURE(status))
return -EIO;
return thinkpad_wmi_extract_output_string(&output, value);
}
static int get_state(u32 *out, u8 instance)
{
u32 tmp;
acpi_status status;
struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
if (!out)
return -EINVAL;
if (instance > 2)
return -ENODEV;
status = wmi_query_block(GUID, instance, &result);
if (ACPI_FAILURE(status))
return -ENODEV;
obj = (union acpi_object *) result.pointer;
if (obj && obj->type == ACPI_TYPE_INTEGER) {
tmp = obj->integer.value;
} else {
tmp = 0;
}
if (result.length > 0 && result.pointer)
kfree(result.pointer);
switch (instance) {
case TC1100_INSTANCE_WIRELESS:
*out = (tmp == 3) ? 1 : 0;
return 0;
case TC1100_INSTANCE_JOGDIAL:
*out = (tmp == 1) ? 0 : 1;
return 0;
default:
return -ENODEV;
}
}
static int thinkpad_wmi_password_settings(struct thinkpad_wmi_pcfg *pcfg)
{
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
const union acpi_object *obj;
acpi_status status;
status = wmi_query_block(LENOVO_BIOS_PASSWORD_SETTINGS_GUID, 0,
&output);
if (ACPI_FAILURE(status))
return -EIO;
obj = output.pointer;
if (!obj || obj->type != ACPI_TYPE_BUFFER || !obj->buffer.pointer)
return -EIO;
if (obj->buffer.length != sizeof(*pcfg)) {
pr_warn("Unknown pcfg buffer length %d\n", obj->buffer.length);
kfree(obj);
return -EIO;
}
memcpy(pcfg, obj->buffer.pointer, obj->buffer.length);
kfree(obj);
return 0;
}
