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Commit 902985a4 authored by Aviral Gupta's avatar Aviral Gupta
Browse files

ASoC: msm: fix the target crash due to the NULL pointer dereference 



During the close of the FE, the mclk is disabled which accesses the
codec drv data.
In case if the tapan codec was not initialized, then close sequence
will result in the null pointer dereference.
Fix by adding a null check before accessing the codec data structure.

CRs-Fixed: 635065
Change-Id: I0678826d073a69b99a05a5b628920be89d210519
Signed-off-by: default avatarAviral Gupta <aviralg@codeaurora.org>
parent e30c480b

sound/soc/codecs/wcd9306.c

+11 −1
Original line number Diff line number Diff line
@@ -5829,7 +5829,17 @@ static struct regulator *tapan_codec_find_regulator( 
	const char *name)

{

	int i;

	struct wcd9xxx *core = dev_get_drvdata(codec->dev->parent);

	struct wcd9xxx *core = NULL;



	if (codec == NULL) {

		dev_err(codec->dev, "%s: codec not initialized\n", __func__);

		return NULL;

	}

	core = dev_get_drvdata(codec->dev->parent);

	if (core == NULL) {

		dev_err(codec->dev, "%s: core not initialized\n", __func__);

		return NULL;

	}



	for (i = 0; i < core->num_of_supplies; i++) {

		if (core->supplies[i].supply &&