drm_gem_prime_handle_to_fd9

Prime export function for gem drivers

Arguments

dev

dev to export the buffer from

file_priv

drm file-private structure

handle

buffer handle to export

flags

flags like DRM_CLOEXEC

prime_fd

pointer to storage for the fd id of the create dma-buf

Overview

This is the PRIME export function which must be used mandatorily by GEM drivers to ensure correct lifetime management of the underlying GEM object. The actual exporting from GEM object to a dma-buf is done through the gem_prime_export driver callback.