From 424a92ebb9d081adc8ce5c6bb636d6d383c69db2 Mon Sep 17 00:00:00 2001
From: Sudheer Papothi <spapothi@codeaurora.org>
Date: Thu, 23 Apr 2020 06:03:59 +0530
Subject: [PATCH] ASoC: msm-compress: Add NULL check in msm_compr_set_volume

Add NULL check for pdata structure in msm_compr_set_volume to
avoid dereference.

Change-Id: I364bf95ce7df0f5b4cea0e7bd4c5926c1966aac1
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
---
 asoc/msm-compress-q6-v2.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/asoc/msm-compress-q6-v2.c b/asoc/msm-compress-q6-v2.c
index 109224a4cfa6..fccb360de005 100644
--- a/asoc/msm-compress-q6-v2.c
+++ b/asoc/msm-compress-q6-v2.c
@@ -381,12 +381,16 @@ static int msm_compr_set_volume(struct snd_compr_stream *cstream,
 	}
 
 	pdata = snd_soc_component_get_drvdata(component);
+	if (!pdata)
+		return -EINVAL;
 
 	if (prtd->compr_passthr != LEGACY_PCM) {
 		pr_debug("%s: No volume config for passthrough %d\n",
 			 __func__, prtd->compr_passthr);
 		return rc;
 	}
+	if (!rtd->dai_link || !pdata->ch_map[rtd->dai_link->id])
+		return -EINVAL;
 
 	use_default = !(pdata->ch_map[rtd->dai_link->id]->set_ch_map);
 	chmap = pdata->ch_map[rtd->dai_link->id]->channel_map;