From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 13 Oct 2015 07:09:19 +0000 (+0300)
Subject: ASoC: wm8960: harmless underflow in wm8960_put_deemph()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c1fe81f2cd30c18d7df444697bac8051fdf2aee6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ASoC: wm8960: harmless underflow in wm8960_put_deemph()

We should only accept "deemph" values of zero and one, but by mistake we
accept negatives as well.  It's harmless but let's clean it up anyway.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index e3b7d0c57411..dc47c2fa6622 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -201,7 +201,7 @@ static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 	struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
-	int deemph = ucontrol->value.integer.value[0];
+	unsigned int deemph = ucontrol->value.integer.value[0];
 
 	if (deemph > 1)
 		return -EINVAL;