drm_dropmaster_ioctl  100 drivers/gpu/drm/drm_internal.h int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
drm_dropmaster_ioctl  603 drivers/gpu/drm/drm_ioctl.c 	DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),