From 7b75119c8bb9bde34f0cc36690094f8928a4c491 Mon Sep 17 00:00:00 2001 From: "Kumar, Mahesh" Date: Wed, 17 May 2017 17:28:24 +0530 Subject: [PATCH] drm/i915/skl: Fail the flip if no FB for WM calculation Git-commit: 7b75119c8bb9bde34f0cc36690094f8928a4c491 Patch-mainline: v4.13-rc1 References: FATE#322643 bsc#1055900 Fail the flip if no FB is present but plane_state is set as visible. Above is not a valid combination so instead of continue fail the flip. Signed-off-by: Mahesh Kumar Reviewed-by: Matt Roper Reviewed-by: Maarten Lankhorst Signed-off-by: Matt Roper Link: http://patchwork.freedesktop.org/patch/msgid/20170517115831.13830-6-mahesh1.kumar@intel.com Acked-by: Takashi Iwai --- drivers/gpu/drm/i915/intel_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4420,7 +4420,8 @@ skl_compute_wm_level(const struct drm_i9 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]);