Greg Kroah-Hartman
2017-Sep-08 13:19 UTC
[Nouveau] [PATCH 4.13 39/47] drm/nouveau: Fix error handling in nv50_disp_atomic_commit
4.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Maarten Lankhorst <maarten.lankhorst at linux.intel.com> commit 813a7e1604eaad1c2792d37d402e1b48b8d0eb3f upstream. Make it more clear that post commit return ret is really return 0, and add a missing drm_atomic_helper_cleanup_planes when drm_atomic_helper_wait_for_fences fails. Fixes: 839ca903f12e ("drm/nouveau/kms/nv50: transition to atomic interfaces internally") Cc: Ben Skeggs <bskeggs at redhat.com> Cc: dri-devel at lists.freedesktop.org Cc: nouveau at lists.freedesktop.org Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170711143314.2148-2-maarten.lankhorst at linux.intel.com Reviewed-by: Sean Paul <seanpaul at chromium.org> [mlankhorst: Use if (ret) to remove the goto in success case.] Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> --- drivers/gpu/drm/nouveau/nv50_display.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -4134,7 +4134,7 @@ nv50_disp_atomic_commit(struct drm_devic if (!nonblock) { ret = drm_atomic_helper_wait_for_fences(dev, state, true); if (ret) - goto done; + goto err_cleanup; } for_each_plane_in_state(state, plane, plane_state, i) { @@ -4162,7 +4162,7 @@ nv50_disp_atomic_commit(struct drm_devic if (crtc->state->enable) { if (!drm->have_disp_power_ref) { drm->have_disp_power_ref = true; - return ret; + return 0; } active = true; break; @@ -4174,6 +4174,9 @@ nv50_disp_atomic_commit(struct drm_devic drm->have_disp_power_ref = false; } +err_cleanup: + if (ret) + drm_atomic_helper_cleanup_planes(dev, state); done: pm_runtime_put_autosuspend(dev->dev); return ret;
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