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@linaro.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

On Fri, 15 Aug 2025 09:49:46 +0300, Dan Carpenter wrote:
> 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().
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: rt5133: Fix IS_ERR() vs NULL bug in rt5133_validate_vendor_info()
      commit: f7f804633c91f0fbf03eefbae39eec2205191a82

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

On Fri, Aug 15, 2025 at 09:49:46AM +0300, Dan Carpenter wrote:
> 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().

This doesn't apply against current code, please check and resend.