diff --git a/drivers/gpu/drm/msm/sde/sde_hw_catalog.c b/drivers/gpu/drm/msm/sde/sde_hw_catalog.c
index ed9a6ea37397..9e0bf09bff0a 100644
--- a/drivers/gpu/drm/msm/sde/sde_hw_catalog.c
+++ b/drivers/gpu/drm/msm/sde/sde_hw_catalog.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -1205,7 +1205,7 @@ static int sde_mixer_parse_dt(struct device_node *np,
 		if (!prop_exists[MIXER_LEN])
 			mixer->len = DEFAULT_SDE_HW_BLOCK_LEN;
 
-		if (lm_pair_mask[i])
+		if ((i < ARRAY_SIZE(lm_pair_mask)) && lm_pair_mask[i])
 			mixer->lm_pair_mask = 1 << lm_pair_mask[i];
 
 		sblk->maxblendstages = max_blendstages;