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drm/i915: Do a better job at disabling primary plane in the noatomic case.
When disable_noatomic is called plane_mask is not correct yet, and plane_state->visible = true is left as true after disabling the primary plane. Other planes are already disabled as part of crtc sanitization, only the primary is left active. But the plane_mask is not updated here. It gets updated during fb takeover in modeset_gem_init, or set to the new value on resume. This means that to disable the primary plane 1 << drm_plane_index(primary) needs to be used. Afterwards because the crtc is no longer active it's forbidden to keep plane_state->visible set, or a WARN_ON in intel_plane_atomic_calc_changes triggers. There are other code points that rely on accurate plane_state->visible too, so make sure the bool is cleared. The other planes are already disabled in intel_sanitize_crtc, so they don't have to be handled here. Cc: stable@vger.kernel.org #v4.3, v4.2? Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92655 Tested-by: Tomas Mezzadra <tmezzadra@gmail.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/5652DB88.9070208@linux.intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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1 changed files with 3 additions and 1 deletions
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@ -6354,9 +6354,11 @@ static void intel_crtc_disable_noatomic(struct drm_crtc *crtc)
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WARN_ON(intel_crtc->unpin_work);
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intel_pre_disable_primary(crtc);
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intel_crtc_disable_planes(crtc, 1 << drm_plane_index(crtc->primary));
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to_intel_plane_state(crtc->primary->state)->visible = false;
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}
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intel_crtc_disable_planes(crtc, crtc->state->plane_mask);
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dev_priv->display.crtc_disable(crtc);
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intel_crtc->active = false;
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intel_update_watermarks(crtc);
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