linux-kernel - [PATCH -next] ASoC: rt711: fix return value check in rt711_sdw

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200115143034.94492-1-weiyongjun1@huawei.com>
Date:   Wed, 15 Jan 2020 14:30:34 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Bard Liao <bardliao@...ltek.com>,
        Oder Chiou <oder_chiou@...ltek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Shuming Fan <shumingf@...ltek.com>
CC:     Wei Yongjun <weiyongjun1@...wei.com>,
        <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next] ASoC: rt711: fix return value check in rt711_sdw_probe()

In case of error, the function devm_regmap_init() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: 320b8b0d13b8 ("ASoC: rt711: add rt711 codec driver")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 sound/soc/codecs/rt711-sdw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt711-sdw.c b/sound/soc/codecs/rt711-sdw.c
index e28dc84ede5b..85e62e1059cd 100644
--- a/sound/soc/codecs/rt711-sdw.c
+++ b/sound/soc/codecs/rt711-sdw.c
@@ -460,8 +460,8 @@ static int rt711_sdw_probe(struct sdw_slave *slave,
 
 	regmap = devm_regmap_init(&slave->dev, NULL,
 		&slave->dev, &rt711_regmap);
-	if (!regmap)
-		return -EINVAL;
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
 
 	rt711_init(&slave->dev, sdw_regmap, regmap, slave);