From: Rob Clark <robdclark@gmail.com>
Date: Mon, 19 Feb 2018 08:29:33 -0500
Subject: drm/msm/mdp5: add missing LM flush bits
Git-commit: 583c13fd77c7db57add9de84a5e43fbf2be42168
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

For some reason, layer-mixer 3 and 4 were missing.  LM3 is used for
writeback on 8x16.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_ctl.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_ctl.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_ctl.c
@@ -468,6 +468,8 @@ u32 mdp_ctl_flush_mask_lm(int lm)
 	case 0:  return MDP5_CTL_FLUSH_LM0;
 	case 1:  return MDP5_CTL_FLUSH_LM1;
 	case 2:  return MDP5_CTL_FLUSH_LM2;
+	case 3:  return MDP5_CTL_FLUSH_LM3;
+	case 4:  return MDP5_CTL_FLUSH_LM4;
 	case 5:  return MDP5_CTL_FLUSH_LM5;
 	default: return 0;
 	}