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Commit 214b55a2 authored by Lan Zou's avatar Lan Zou Committed by Gerrit - the friendly Code Review server
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drm/msm/sde: fix array overflow 



Array ilm_pair_mask may use index larger than its size. This change
can avoid the risk happens.

Change-Id: I18b2ae814aa19e6c76884bbe71cdd9ea659ce05a
Signed-off-by: default avatarLan Zou <lanz@codeaurora.org>
parent d803000f

drivers/gpu/drm/msm/sde/sde_hw_catalog.c

+2 −2
Original line number Diff line number Diff line 
/* 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;