> -----Original Message-----
> From: amd-gfx [mailto:[email protected]] On Behalf
> Of Christian König
> Sent: Monday, October 30, 2017 10:00 AM
> To: [email protected]; [email protected]
> Subject: [PATCH] drm/ttm: once more fix ttm_buffer_object_transfer
> 
> From: Christian König <[email protected]>
> 
> When the mutex is locked just in the moment we copy it we end up with a
> warning that we release a locked mutex.
> 
> Fix this by properly reinitializing the mutex.
> 
> Signed-off-by: Christian König <[email protected]>

Reviewed-by: Alex Deucher <[email protected]>

Stable?

Alex

> ---
>  drivers/gpu/drm/ttm/ttm_bo_util.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c
> b/drivers/gpu/drm/ttm/ttm_bo_util.c
> index 78cb99be7146..e7a519f1849b 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> @@ -474,6 +474,7 @@ static int ttm_buffer_object_transfer(struct
> ttm_buffer_object *bo,
>       INIT_LIST_HEAD(&fbo->lru);
>       INIT_LIST_HEAD(&fbo->swap);
>       INIT_LIST_HEAD(&fbo->io_reserve_lru);
> +     mutex_init(&fbo->wu_mutex);
>       fbo->moving = NULL;
>       drm_vma_node_reset(&fbo->vma_node);
>       atomic_set(&fbo->cpu_writers, 0);
> --
> 2.11.0
> 
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