Commit c8061309 authored Jul 21, 2020 by Qi Liu Committed by Lee Jones Feb 01, 2023

BACKPORT: drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()



We should put the reference count of the fence after calling
virtio_gpu_cmd_submit(). So add the missing dma_fence_put().

Bug: 254441685
Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization")
Co-developed-by: Xin He <hexin.op@bytedance.com>
Signed-off-by: Xin He <hexin.op@bytedance.com>
Signed-off-by: Qi Liu <liuqi.16@bytedance.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200721101647.42653-1-hexin.op@bytedance.com


Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 8b6ec999b198b59ae61e86e70f5e9df73fe4754f)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I5c7ab5a1895bae14a0e120372d27243dc6b0f6bf

parent 02c86d47

drivers/gpu/drm/virtio/virtgpu_ioctl.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -221,6 +221,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device dev, void data,

		virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
		vfpriv->ctx_id, out_fence);
		dma_fence_put(&out_fence->f);

		ttm_eu_fence_buffer_objects(&ticket, &validate_list, &out_fence->f);