linux-kernel - [PATCH -next] ASoC: rt715: fix return value check in rt715_sdw

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Message-ID: <20200117024149.75515-1-weiyongjun1@huawei.com>
Date:   Fri, 17 Jan 2020 02:41:49 +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>, Jack Yu <jack.yu@...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: rt715: fix return value check in rt715_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: d1ede0641b05 ("ASoC: rt715: add RT715 codec driver")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 sound/soc/codecs/rt715-sdw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt715-sdw.c b/sound/soc/codecs/rt715-sdw.c
index 18868e4ae6e8..6d892c44c522 100644
--- a/sound/soc/codecs/rt715-sdw.c
+++ b/sound/soc/codecs/rt715-sdw.c
@@ -535,8 +535,8 @@ static int rt715_sdw_probe(struct sdw_slave *slave,
 
 	regmap = devm_regmap_init(&slave->dev, NULL, &slave->dev,
 		&rt715_regmap);
-	if (!regmap)
-		return -EINVAL;
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
 
 	rt715_init(&slave->dev, sdw_regmap, regmap, slave);