Re: [PATCH V1] accel/amdxdna: Disable device buffer exporting

[Mario Limonciello <superm1@kernel.org>]

On 5/26/26 19:50, Lizhi Hou wrote:
> Device buffers are never intended to be exported. Disable exporting
> support explicitly.
> 
> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
> ---
>   drivers/accel/amdxdna/amdxdna_gem.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
> index 2dfdc56ba91d..2727e48afc0a 100644
> --- a/drivers/accel/amdxdna/amdxdna_gem.c
> +++ b/drivers/accel/amdxdna/amdxdna_gem.c
> @@ -725,9 +725,15 @@ static int amdxdna_gem_dev_obj_vmap(struct drm_gem_object *obj, struct iosys_map
>   	return 0;
>   }
>   
> +static struct dma_buf *amdxdna_gem_dev_obj_export(struct drm_gem_object *gobj, int flags)
> +{
> +	return ERR_PTR(-EOPNOTSUPP);
> +}
> +
>   static const struct drm_gem_object_funcs amdxdna_gem_dev_obj_funcs = {
>   	.free = amdxdna_gem_dev_obj_free,
>   	.vmap = amdxdna_gem_dev_obj_vmap,
> +	.export = amdxdna_gem_dev_obj_export,
>   };
>   
>   static const struct drm_gem_object_funcs amdxdna_gem_shmem_funcs = {