From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 13 Oct 2015 07:10:18 +0000
Subject: [patch] ASoC: wm8903: harmless underflow in wm8903_put_deemph()
Message-Id: <20151013071018.GF31537@mwanda>
List-Id: <kernel-janitors.vger.kernel.org>
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To: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, Charles Keepax <ckeepax@opensource.wolfsonmicro.com>, Lars-Peter Clausen <lars@metafoo.de>, Mauro Carvalho Chehab <m.chehab@samsung.com>, Tomi Valkeinen <tomi.valkeinen@ti.com>, Axel Lin <axel.lin@ingics.com>, Krzysztof Kozlowski <k.kozlowski@samsung.com>, abdoulaye berthe <berthe.ab@gmail.com>, patches@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org

Valid values for "deemph" are zero and one, but we accidentally allow
negative values as well.  It's harmless, but static checkers complain
and we may as well clean it up.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index b011253..e4cc41e 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -452,7 +452,7 @@ static int wm8903_put_deemph(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 	struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
-	int deemph = ucontrol->value.integer.value[0];
+	unsigned int deemph = ucontrol->value.integer.value[0];
 	int ret = 0;
 
 	if (deemph > 1)