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SubjectRe: [PATCH 04/10] drm/virtio: annotate virtio_gpu_queue_ctrl_buffer_locked
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On 2016年12月06日 23:40, Michael S. Tsirkin wrote:
> virtio_gpu_queue_ctrl_buffer_locked is called with ctrlq.qlock taken, it
> releases and acquires this lock. This causes a sparse warning. Add
> appropriate annotations for sparse context checking.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> drivers/gpu/drm/virtio/virtgpu_vq.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
> index 2f0c2f9..a6e2ce4 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_vq.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
> @@ -297,6 +297,8 @@ void virtio_gpu_dequeue_cursor_func(struct work_struct *work)
>
> static int virtio_gpu_queue_ctrl_buffer_locked(struct virtio_gpu_device *vgdev,
> struct virtio_gpu_vbuffer *vbuf)
> + __releases(&vgdev->ctrlq.qlock)
> + __acquires(&vgdev->ctrlq.qlock)
> {
> struct virtqueue *vq = vgdev->ctrlq.vq;
> struct scatterlist *sgs[3], vcmd, vout, vresp;

Reviewed-by: Jason Wang <jasowang@redhat.com>

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