linux-kernel - [PATCH 1/4] extcon: remove redundant null checking for class

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Date:   Fri, 17 Feb 2023 17:46:10 +0900
From:   Bumwoo Lee <bw365.lee@...sung.com>
To:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        linux-kernel@...r.kernel.org
Cc:     Bumwoo Lee <bw365.lee@...sung.com>
Subject: [PATCH 1/4] extcon: remove redundant null checking for class

Create_extcon_class() is already Null checking.

Signed-off-by: Bumwoo Lee <bw365.lee@...sung.com>
---
 drivers/extcon/extcon.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index e1c71359b605..adcf01132f70 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -1012,12 +1012,13 @@ ATTRIBUTE_GROUPS(extcon);
 
 static int create_extcon_class(void)
 {
-	if (!extcon_class) {
-		extcon_class = class_create(THIS_MODULE, "extcon");
-		if (IS_ERR(extcon_class))
-			return PTR_ERR(extcon_class);
-		extcon_class->dev_groups = extcon_groups;
-	}
+	if (extcon_class)
+		return 0;
+
+	extcon_class = class_create(THIS_MODULE, "extcon");
+	if (IS_ERR(extcon_class))
+		return PTR_ERR(extcon_class);
+	extcon_class->dev_groups = extcon_groups;
 
 	return 0;
 }
@@ -1088,11 +1089,9 @@ int extcon_dev_register(struct extcon_dev *edev)
 	int ret, index = 0;
 	static atomic_t edev_no = ATOMIC_INIT(-1);
 
-	if (!extcon_class) {
-		ret = create_extcon_class();
-		if (ret < 0)
-			return ret;
-	}
+	ret = create_extcon_class();
+	if (ret < 0)
+		return ret;
 
 	if (!edev || !edev->supported_cable)
 		return -EINVAL;
-- 
2.35.1