diff options
Diffstat (limited to 'drivers/platform/x86/dell-wmi-descriptor.h')
| -rw-r--r-- | drivers/platform/x86/dell-wmi-descriptor.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/platform/x86/dell-wmi-descriptor.h b/drivers/platform/x86/dell-wmi-descriptor.h index 5f7b69c2c83a..1e8cb96ffd78 100644 --- a/drivers/platform/x86/dell-wmi-descriptor.h +++ b/drivers/platform/x86/dell-wmi-descriptor.h @@ -13,7 +13,13 @@ #include <linux/wmi.h> -#define DELL_WMI_DESCRIPTOR_GUID "8D9DDCBC-A997-11DA-B012-B622A1EF5492" +/* possible return values: + * -ENODEV: Descriptor GUID missing from WMI bus + * -EPROBE_DEFER: probing for dell-wmi-descriptor not yet run + * 0: valid descriptor, successfully probed + * < 0: invalid descriptor, don't probe dependent devices + */ +int dell_wmi_get_descriptor_valid(void); bool dell_wmi_get_interface_version(u32 *version); bool dell_wmi_get_size(u32 *size); |