From f83a9b8c7fd0557b0c50784bfdc1bbe9140c9bf8 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 26 Feb 2025 18:03:13 +0100
Subject: [PATCH] drm/prime: Use dma_buf from GEM object instance
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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: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Anusha Srivatsa <asrivats@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250226172457.217725-11-tzimmermann@suse.de
---
drivers/gpu/drm/drm_prime.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 32a8781cfd67b..bdb51c8f262e7 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -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;
--
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