From 415cb45895f43015515473fbc40563ca5eec9a7c Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 14 Apr 2025 15:12:01 +0200 Subject: [PATCH] drm/virtio: 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: Thomas Zimmermann Reviewed-by: Dmitry Osipenko Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20250414131507.566072-3-tzimmermann@suse.de --- drivers/gpu/drm/virtio/virtgpu_prime.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c index ce49282198cbf..1118a0250279b 100644 --- a/drivers/gpu/drm/virtio/virtgpu_prime.c +++ b/drivers/gpu/drm/virtio/virtgpu_prime.c @@ -204,16 +204,15 @@ static void virtgpu_dma_buf_free_obj(struct drm_gem_object *obj) { struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); struct virtio_gpu_device *vgdev = obj->dev->dev_private; - struct dma_buf_attachment *attach = obj->import_attach; if (drm_gem_is_imported(obj)) { - struct dma_buf *dmabuf = attach->dmabuf; + struct dma_buf *dmabuf = obj->dma_buf; dma_resv_lock(dmabuf->resv, NULL); virtgpu_dma_buf_unmap(bo); dma_resv_unlock(dmabuf->resv); - dma_buf_detach(dmabuf, attach); + dma_buf_detach(dmabuf, obj->import_attach); dma_buf_put(dmabuf); } -- 2.50.1