drm_vc4_get_hang_state
struct drm_vc4_get_hang_state *state;
struct drm_vc4_get_hang_state user_state;
struct drm_vc4_get_hang_state *get_state = data;
struct drm_vc4_get_hang_state *state;
#define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state)