linux-kernel - [PATCH next] regulator: rt5133: Fix IS_ERR() vs NULL bug in rt5133_validate_vendor

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Message-ID: <aJ7YivhlWlE6ifw1@stanley.mountain>
Date: Fri, 15 Aug 2025 09:49:46 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Jeff Chang <jeff_chang@...htek.com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH next] regulator: rt5133: Fix IS_ERR() vs NULL bug in
 rt5133_validate_vendor_info()

The "priv->cdata" pointer isn't an error pointer, it should be a NULL
check instead.  Otherwise it leads to a NULL pointer dereference in the
caller, rt5133_probe().

Fixes: 714165e1c4b0 ("regulator: rt5133: Add RT5133 PMIC regulator Support")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/regulator/rt5133-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/rt5133-regulator.c b/drivers/regulator/rt5133-regulator.c
index d0f367381fbb..a83a595c0609 100644
--- a/drivers/regulator/rt5133-regulator.c
+++ b/drivers/regulator/rt5133-regulator.c
@@ -510,7 +510,7 @@ static int rt5133_validate_vendor_info(struct rt5133_priv *priv)
 			break;
 		}
 	}
-	if (IS_ERR(priv->cdata)) {
+	if (!priv->cdata) {
 		dev_err(priv->dev, "Failed to find regualtor match version\n");
 		return -ENODEV;
 	}
-- 
2.47.2