Commit 33dbb2a7 authored Sep 26, 2016 by Phani Kumar Uppalapati Committed by Gerrit - the friendly Code Review server Sep 26, 2016

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 <phaniu@codeaurora.org>

parent 626caf4e

sound/soc/codecs/wcd934x/wcd934x-dsd.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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)