vc4_prime_export 206 drivers/gpu/drm/vc4/vc4_drv.c .gem_prime_export = vc4_prime_export, vc4_prime_export 715 drivers/gpu/drm/vc4/vc4_drv.h struct dma_buf *vc4_prime_export(struct drm_gem_object *obj, int flags);