linux-kernel - [PATCH v3 1/2] regulator: core: Fix more error checking for debugfs_create

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Message-Id: <ee980a108b5854dd8ce3630f8f673e784e057d17.1685013051.git.geert+renesas@glider.be>
Date:   Thu, 25 May 2023 13:13:58 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Osama Muhammad <osmtendev@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v3 1/2] regulator: core: Fix more error checking for debugfs_create_dir()

In case of failure, debugfs_create_dir() does not return NULL, but an
error pointer.  Most incorrect error checks were fixed, but the one in
create_regulator() was forgotten.

Fix the remaining error check.

Fixes: 2bf1c45be3b8f3a3 ("regulator: Fix error checking for debugfs_create_dir")
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v3:
  - Re-add accidentally dropped opening curly brace,

v2:
  - Split off from "regulator: core: Streamline debugfs operations".
---
 drivers/regulator/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 698ab7f5004bf6b7..c1bc4729301d5fed 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1911,7 +1911,7 @@ static struct regulator *create_regulator(struct regulator_dev *rdev,
 
 	if (err != -EEXIST)
 		regulator->debugfs = debugfs_create_dir(supply_name, rdev->debugfs);
-	if (!regulator->debugfs) {
+	if (IS_ERR(regulator->debugfs)) {
 		rdev_dbg(rdev, "Failed to create debugfs directory\n");
 	} else {
 		debugfs_create_u32("uA_load", 0444, regulator->debugfs,
-- 
2.34.1