Re: [PATCH 2/6] drm/dp_mst: Remove all evil duplicate state pointers

[Daniel Vetter <daniel@ffwll.ch>]

On Tue, Oct 23, 2018 at 07:12:47PM -0400, Lyude Paul wrote:
> There's no reason to track the atomic state three times. Unfortunately,
> this is currently what we're doing, and even worse is that there is only
> one actually correct state pointer: the one in mst_state->base.state.
> mgr->state never seems to be used, along with the one in
> mst_state->state.
> 
> This confused me for over 4 hours until I realized there was no magic
> behind these pointers. So, let's save everyone else from the trouble.
> 
> Signed-off-by: Lyude Paul <lyude@redhat.com>.
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Signed-off-by: Lyude Paul <lyude@redhat.com>

Uh, that's some fail :-/ Thanks for cleaning up.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
>  include/drm/drm_dp_mst_helper.h | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
> index 7f78d26a0766..59f005b419cf 100644
> --- a/include/drm/drm_dp_mst_helper.h
> +++ b/include/drm/drm_dp_mst_helper.h
> @@ -409,7 +409,6 @@ struct drm_dp_payload {
>  struct drm_dp_mst_topology_state {
>  	struct drm_private_state base;
>  	int avail_slots;
> -	struct drm_atomic_state *state;
>  	struct drm_dp_mst_topology_mgr *mgr;
>  };
>  
> @@ -497,11 +496,6 @@ struct drm_dp_mst_topology_mgr {
>  	 */
>  	int pbn_div;
>  
> -	/**
> -	 * @state: State information for topology manager
> -	 */
> -	struct drm_dp_mst_topology_state *state;
> -
>  	/**
>  	 * @funcs: Atomic helper callbacks
>  	 */
> -- 
> 2.17.2
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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