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[3/8] drm/i915/skl: Fail the flip if no FB for WM calculation

Message ID 20170228113143.8280-4-mahesh1.kumar@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kumar, Mahesh Feb. 28, 2017, 11:31 a.m. UTC
Fail the flip if no FB is present but plane_state is set as visible,
that is not a valid combination so instead of continue fail the flip.

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 55080d0baa49..7cf6f5702cbe 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3751,7 +3751,8 @@  skl_compute_wm_level(const struct drm_i915_private *dev_priv,
 	if (!intel_pstate)
 		intel_pstate = to_intel_plane_state(plane->state);
 
-	WARN_ON(!intel_pstate->base.fb);
+	if (WARN_ON(!intel_pstate->base.fb))
+		return -EINVAL;
 
 	ddb_blocks = skl_ddb_entry_size(&ddb->plane[pipe][intel_plane->id]);