On Tue, Jul 11, 2017 at 04:33:04PM +0200, Maarten Lankhorst wrote:
> We want to change swap_state to wait indefinitely, but to do this
> swap_state should wait interruptibly. This requires propagating
> the error to each driver.
>
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/drm_atomic_helper.c | 22 ++++++++++++++++------
> include/drm/drm_atomic_helper.h | 3 +--
> 2 files changed, 17 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 667ec97d4efb..bfb98fbd0e0e 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -1510,10 +1510,8 @@ int drm_atomic_helper_commit(struct drm_device *dev,
>
> if (!nonblock) {
> ret = drm_atomic_helper_wait_for_fences(dev, state, true);
> - if (ret) {
> - drm_atomic_helper_cleanup_planes(dev, state);
> - return ret;
> - }
> + if (ret)
> + goto err;
> }
>
> /*
> @@ -1522,7 +1520,9 @@ int drm_atomic_helper_commit(struct drm_device *dev,
> * the software side now.
> */
>
> - drm_atomic_helper_swap_state(state, true);
> + ret = drm_atomic_helper_swap_state(state, true);
> + if (ret)
> + goto err;
>
> /*
> * Everything below can be run asynchronously without the need to grab
> @@ -1551,6 +1551,10 @@ int drm_atomic_helper_commit(struct drm_device *dev,
> commit_tail(state);
>
> return 0;
> +
> +err:
> + drm_atomic_helper_cleanup_planes(dev, state);
> + return ret;
> }
> EXPORT_SYMBOL(drm_atomic_helper_commit);
>
> @@ -2254,8 +2258,12 @@ EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes);
> * the &drm_plane.state, &drm_crtc.state or &drm_connector.state pointer. With
> * the current atomic helpers this is almost always the case, since the helpers
> * don't pass the right state structures to the callbacks.
> + *
> + * Returns:
> + *
> + * Always returns 0, cannot fail yet.
> */
> -void drm_atomic_helper_swap_state(struct drm_atomic_state *state,
> +int drm_atomic_helper_swap_state(struct drm_atomic_state *state,
> bool stall)
> {
> int i;
> @@ -2332,6 +2340,8 @@ void drm_atomic_helper_swap_state(struct drm_atomic_state *state,
>
> __for_each_private_obj(state, obj, obj_state, i, funcs)
> funcs->swap_state(obj, &state->private_objs[i].obj_state);
> +
> + return 0;
> }
> EXPORT_SYMBOL(drm_atomic_helper_swap_state);
>
> diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
> index dd196cc0afd7..37c9534ff691 100644
> --- a/include/drm/drm_atomic_helper.h
> +++ b/include/drm/drm_atomic_helper.h
> @@ -84,8 +84,7 @@ void
> drm_atomic_helper_disable_planes_on_crtc(struct drm_crtc_state *old_crtc_state,
> bool atomic);
>
> -void drm_atomic_helper_swap_state(struct drm_atomic_state *state,
> - bool stall);
> +int drm_atomic_helper_swap_state(struct drm_atomic_state *state, bool stall);
>
> /* nonblocking commit helpers */
> int drm_atomic_helper_setup_commit(struct drm_atomic_state *state,
> --
> 2.11.0
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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