From 864f84377959e3f326749340e22801439221967a Mon Sep 17 00:00:00 2001
From: Vignesh Kulothungan <vigneshk@codeaurora.org>
Date: Fri, 5 Apr 2019 11:04:10 -0700
Subject: [PATCH] asoc: codecs: add null check before access

Add null check before accessing wcd938x private data.

Change-Id: Ia2226202deccccbd07e6c0d501daaded2b7e72d8
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>
---
 asoc/codecs/wcd938x/wcd938x.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/asoc/codecs/wcd938x/wcd938x.c b/asoc/codecs/wcd938x/wcd938x.c
index 6412fd9876..96d9b98759 100644
--- a/asoc/codecs/wcd938x/wcd938x.c
+++ b/asoc/codecs/wcd938x/wcd938x.c
@@ -1355,6 +1355,13 @@ int wcd938x_micbias_control(struct snd_soc_component *component,
 			__func__, micb_index);
 		return -EINVAL;
 	}
+
+	if (NULL == wcd938x) {
+		dev_err(component->dev,
+			"%s: wcd938x private data is NULL\n", __func__);
+		return -EINVAL;
+	}
+
 	switch (micb_num) {
 	case MIC_BIAS_1:
 		micb_reg = WCD938X_ANA_MICB1;