linux-kernel - [PATCH -next] ASoC: rt715-sdca: Fix return value check in rt715_sdca_sdw

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Date:   Tue, 9 Mar 2021 13:14:58 +0000
From:   'Wei Yongjun <weiyongjun1@...wei.com>
To:     <weiyongjun1@...wei.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:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>, Hulk Robot <hulkci@...wei.com>
Subject: [PATCH -next] ASoC: rt715-sdca: Fix return value check in rt715_sdca_sdw_probe()

From: Wei Yongjun <weiyongjun1@...wei.com>

In case of error, the function devm_regmap_init_sdw_mbq() and
devm_regmap_init_sdw() returns ERR_PTR() not NULL. The NULL test
in the return value check should be replaced with IS_ERR().

Fixes: 393c52d2d109 ("ASoC: rt715-sdca: Add RT715 sdca vendor-specific driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 sound/soc/codecs/rt715-sdca-sdw.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/rt715-sdca-sdw.c b/sound/soc/codecs/rt715-sdca-sdw.c
index bcced85876b0..1350798406f0 100644
--- a/sound/soc/codecs/rt715-sdca-sdw.c
+++ b/sound/soc/codecs/rt715-sdca-sdw.c
@@ -184,12 +184,12 @@ static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
 
 	/* Regmap Initialization */
 	mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
-	if (!mbq_regmap)
-		return -EINVAL;
+	if (IS_ERR(mbq_regmap))
+		return PTR_ERR(mbq_regmap);
 
 	regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
-	if (!regmap)
-		return -EINVAL;
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
 
 	return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
 }