Without waiting for hw_done, previous atomic updates may dereference the wrong state and cause a lot of confusion. The real fix is fixing all obj->state to use the accessor macros, but for now wait indefinitely and interruptibly.
Cc: Boris Brezillon <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Sean Paul <[email protected]> Cc: CK Hu <[email protected]> Cc: Philipp Zabel <[email protected]> Cc: Matthias Brugger <[email protected]> Cc: Rob Clark <[email protected]> Cc: Ben Skeggs <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Jonathan Hunter <[email protected]> Cc: Jyri Sarha <[email protected]> Cc: Tomi Valkeinen <[email protected]> Cc: Eric Anholt <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Maarten Lankhorst <[email protected]> --- drivers/gpu/drm/drm_atomic_helper.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index f66b6c45cdd0..56e7729d993d 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -2144,8 +2144,7 @@ EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes); int drm_atomic_helper_swap_state(struct drm_atomic_state *state, bool stall) { - int i; - long ret; + int i, ret; struct drm_connector *connector; struct drm_connector_state *old_conn_state, *new_conn_state; struct drm_crtc *crtc; @@ -2168,12 +2167,11 @@ int drm_atomic_helper_swap_state(struct drm_atomic_state *state, if (!commit) continue; - ret = wait_for_completion_timeout(&commit->hw_done, - 10*HZ); - if (ret == 0) - DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n", - crtc->base.id, crtc->name); + ret = wait_for_completion_interruptible(&commit->hw_done); drm_crtc_commit_put(commit); + + if (ret) + return ret; } } -- 2.11.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
