Commit 90378e58 authored Aug 17, 2017 by Noralf Trønnes

drm/gem: drm_gem_dumb_map_offset(): reject dma-buf



Reject mapping an imported dma-buf since is's an invalid use-case.

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502986891-36764-2-git-send-email-noralf@tronnes.org

parent b7df5749

drivers/gpu/drm/drm_gem.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -333,6 +333,12 @@ int drm_gem_dumb_map_offset(struct drm_file file, struct drm_device dev,
		if (!obj)
		return -ENOENT;

		/* Don't allow imported objects to be mapped */
		if (obj->import_attach) {
		ret = -EINVAL;
		goto out;
		}

		ret = drm_gem_create_mmap_offset(obj);
		if (ret)
		goto out;