Commit ae4e55b8 authored by Maarten Lankhorst's avatar Maarten Lankhorst Committed by Daniel Vetter
Browse files

drm/i915: No longer allow exporting userptr through dma-buf 



It doesn't make sense to export a memory address, we will prevent
allowing access this way to different address spaces when we
rework userptr handling, so best to explicitly disable it.

Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: default avatarThomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: default avatarJason Ekstrand <jason@jlekstrand.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-13-maarten.lankhorst@linux.intel.com
parent ae30af84

drivers/gpu/drm/i915/gem/i915_gem_userptr.c

+2 −3
Original line number Diff line number Diff line
@@ -694,10 +694,9 @@ i915_gem_userptr_release(struct drm_i915_gem_object *obj) 
static int

i915_gem_userptr_dmabuf_export(struct drm_i915_gem_object *obj)

{

	if (obj->userptr.mmu_object)

		return 0;

	drm_dbg(obj->base.dev, "Exporting userptr no longer allowed\n");



	return i915_gem_userptr_init__mmu_notifier(obj, 0);

	return -EINVAL;

}



static int