int drm_proc_init (drm_device_t * dev, int minor, struct proc_dir_entry * root, struct proc_dir_entry ** dev_root);
\param dev DRM device. \param minor device minor number. \param root DRI proc dir entry. \param dev_root resulting DRI device proc dir entry. \return root entry pointer on success, or NULL on failure.
Create the DRI proc root entry ``/proc/dri'', the device proc root entry ``/proc/dri/minor%/'', and each entry in proc_list as ``/proc/dri/minor%/name%''.