From c4749c9a4a9ddc16200ce46a19078357727bf4b1 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Mon, 31 Aug 2015 12:25:04 +0200 Subject: [PATCH] drm/atomic: Fix bookkeeping with TEST_ONLY, v3. Commit ec9f932ed41622d120de52a5b525e4d77b9ef17e "drm/atomic: Cleanup on error properly in the atomic ioctl." cleaned up some error paths, but didn't fix the TEST_ONLY path. In the check only case plane->fb shouldn't be updated, and the vblank events should be cleared as on failure. Changes since v1: - Fix -EDEADLK handling of vblank events too. - Free state last with CHECK_ONLY. Changes since v2: - Add comment about freeing crtc_state->event with TEST_ONLY. (Daniel Stone) Signed-off-by: Maarten Lankhorst Reviewed-by: Daniel Stone Signed-off-by: Jani Nikula --- drivers/gpu/drm/drm_atomic.c | 39 +++++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 434915448ea0..f7d5166f89b2 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1515,7 +1515,8 @@ retry: copied_props++; } - if (obj->type == DRM_MODE_OBJECT_PLANE && count_props) { + if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && + !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { plane = obj_to_plane(obj); plane_mask |= (1 << drm_plane_index(plane)); plane->old_fb = plane->fb; @@ -1537,10 +1538,11 @@ retry: } if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { + /* + * Unlike commit, check_only does not clean up state. + * Below we call drm_atomic_state_free for it. + */ ret = drm_atomic_check_only(state); - /* _check_only() does not free state, unlike _commit() */ - if (!ret) - drm_atomic_state_free(state); } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { ret = drm_atomic_async_commit(state); } else { @@ -1567,25 +1569,30 @@ out: plane->old_fb = NULL; } + if (ret && arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { + /* + * TEST_ONLY and PAGE_FLIP_EVENT are mutually exclusive, + * if they weren't, this code should be called on success + * for TEST_ONLY too. + */ + + for_each_crtc_in_state(state, crtc, crtc_state, i) { + if (!crtc_state->event) + continue; + + destroy_vblank_event(dev, file_priv, + crtc_state->event); + } + } + if (ret == -EDEADLK) { drm_atomic_state_clear(state); drm_modeset_backoff(&ctx); goto retry; } - if (ret) { - if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { - for_each_crtc_in_state(state, crtc, crtc_state, i) { - if (!crtc_state->event) - continue; - - destroy_vblank_event(dev, file_priv, - crtc_state->event); - } - } - + if (ret || arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) drm_atomic_state_free(state); - } drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx); -- 2.11.0