linux-kernel - [PATCH] ASoC: topology: Fix a signedness bug in soc_tplg_dapm_widget

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Message-ID: <20190925110624.GR3264@mwanda>
Date:   Wed, 25 Sep 2019 14:06:24 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Liam Girdwood <lgirdwood@...il.com>
Cc:     Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] ASoC: topology: Fix a signedness bug in
 soc_tplg_dapm_widget_create()

The "template.id" variable is an enum and in this context GCC will
treat it as an unsigned int so it can never be less than zero.

Fixes: 8a9782346dcc ("ASoC: topology: Add topology core")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 sound/soc/soc-topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index aa9a1fca46fa..0fd032914a31 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1582,7 +1582,7 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
 
 	/* map user to kernel widget ID */
 	template.id = get_widget_id(le32_to_cpu(w->id));
-	if (template.id < 0)
+	if ((int)template.id < 0)
 		return template.id;
 
 	/* strings are allocated here, but used and freed by the widget */
-- 
2.20.1