From 33dbb2a7352f8fc2e41d2eec1dd7e0dcd9fc4ec6 Mon Sep 17 00:00:00 2001 From: Phani Kumar Uppalapati Date: Mon, 26 Sep 2016 13:33:02 -0700 Subject: [PATCH] ASoC: wcd934x: Check for null pointer before access Check dsd config structure pointer for null before access to prevent kernel panic. CRs-fixed: 1070189 Change-Id: I791941fbede4b136c3f24d15b7fb0b60dd5477e6 Signed-off-by: Phani Kumar Uppalapati --- sound/soc/codecs/wcd934x/wcd934x-dsd.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sound/soc/codecs/wcd934x/wcd934x-dsd.c b/sound/soc/codecs/wcd934x/wcd934x-dsd.c index 246b3bfab876..4deb67a5a5cf 100644 --- a/sound/soc/codecs/wcd934x/wcd934x-dsd.c +++ b/sound/soc/codecs/wcd934x/wcd934x-dsd.c @@ -378,6 +378,11 @@ static int tavil_enable_dsd(struct snd_soc_dapm_widget *w, int interp_idx; u8 pcm_rate_val; + if (!dsd_conf) { + dev_err(codec->dev, "%s: null dsd_config pointer\n", __func__); + return -EINVAL; + } + if (w->shift == DSD0) { /* Read out select */ if (snd_soc_read(codec, WCD934X_CDC_DSD0_CFG0) & 0x02)