linux-kernel - [PATCH v5 4/6] drm/i915/skl: Ensure pipes with changed wms get added to the state

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Date:	Tue,  2 Aug 2016 14:52:52 -0400
From:	Lyude <cpaul@...hat.com>
To:	intel-gfx@...ts.freedesktop.org,
	Ville Syrjälä 
	<ville.syrjala@...ux.intel.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Matt Roper <matthew.d.roper@...el.com>
Cc:	Lyude <cpaul@...hat.com>, stable@...r.kernel.org,
	Daniel Vetter <daniel.vetter@...el.com>,
	Radhakrishna Sripada <radhakrishna.sripada@...el.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v5 4/6] drm/i915/skl: Ensure pipes with changed wms get added to the state

If we're enabling a pipe, we'll need to modify the watermarks on all
other active pipes. Since those pipes won't be added to the state on
their own, we need to add them ourselves.

Signed-off-by: Lyude <cpaul@...hat.com>
Cc: stable@...r.kernel.org
Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc: Daniel Vetter <daniel.vetter@...el.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@...el.com>
Cc: Hans de Goede <hdegoede@...hat.com>
Cc: Matt Roper <matthew.d.roper@...el.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 53adcbf..6b2452b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4085,6 +4085,10 @@ skl_compute_ddb(struct drm_atomic_state *state)
 		ret = skl_allocate_pipe_ddb(cstate, ddb);
 		if (ret)
 			return ret;
+
+		ret = drm_atomic_add_affected_planes(state, &intel_crtc->base);
+		if (ret)
+			return ret;
 	}
 
 	return 0;
-- 
2.7.4