Commit f83a9b8c authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/prime: Use dma_buf from GEM object instance 



Avoid dereferencing struct drm_gem_object.import_attach for the
imported dma-buf. The dma_buf field in the GEM object instance refers
to the same buffer. Prepares to make import_attach optional.

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarAnusha Srivatsa <asrivats@redhat.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250226172457.217725-11-tzimmermann@suse.de
parent 0695d8fc

drivers/gpu/drm/drm_prime.c

+1 −7
Original line number Diff line number Diff line
@@ -453,13 +453,7 @@ struct dma_buf *drm_gem_prime_handle_to_dmabuf(struct drm_device *dev, 
	}



	mutex_lock(&dev->object_name_lock);

	/* re-export the original imported object */

	if (obj->import_attach) {

		dmabuf = obj->import_attach->dmabuf;

		get_dma_buf(dmabuf);

		goto out_have_obj;

	}



	/* re-export the original imported/exported object */

	if (obj->dma_buf) {

		get_dma_buf(obj->dma_buf);

		dmabuf = obj->dma_buf;