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-rw-r--r--include/linux/wmi.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/wmi.h b/include/linux/wmi.h
index 207544968268..8a643c39fcce 100644
--- a/include/linux/wmi.h
+++ b/include/linux/wmi.h
@@ -27,6 +27,14 @@ struct wmi_device {
bool setable;
};
+/**
+ * to_wmi_device() - Helper macro to cast a device to a wmi_device
+ * @device: device struct
+ *
+ * Cast a struct device to a struct wmi_device.
+ */
+#define to_wmi_device(device) container_of(device, struct wmi_device, dev)
+
extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev,
u8 instance, u32 method_id,
const struct acpi_buffer *in,