linux-kernel - [PATCH 3/3] mfd: aat2870: no need to check return value of debugfs

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Message-Id: <20190706164722.18766-3-gregkh@linuxfoundation.org>
Date:   Sat,  6 Jul 2019 18:47:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 3/3] mfd: aat2870: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/mfd/aat2870-core.c  | 13 ++-----------
 include/linux/mfd/aat2870.h |  1 -
 2 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 9d3d90d386c2..51f4c10d2f36 100644
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -334,18 +334,9 @@ static const struct file_operations aat2870_reg_fops = {
 static void aat2870_init_debugfs(struct aat2870_data *aat2870)
 {
 	aat2870->dentry_root = debugfs_create_dir("aat2870", NULL);
-	if (!aat2870->dentry_root) {
-		dev_warn(aat2870->dev,
-			 "Failed to create debugfs root directory\n");
-		return;
-	}
 
-	aat2870->dentry_reg = debugfs_create_file("regs", 0644,
-						  aat2870->dentry_root,
-						  aat2870, &aat2870_reg_fops);
-	if (!aat2870->dentry_reg)
-		dev_warn(aat2870->dev,
-			 "Failed to create debugfs register file\n");
+	debugfs_create_file("regs", 0644, aat2870->dentry_root, aat2870,
+			    &aat2870_reg_fops);
 }
 
 #else
diff --git a/include/linux/mfd/aat2870.h b/include/linux/mfd/aat2870.h
index f7316c29bdec..d9542246bd44 100644
--- a/include/linux/mfd/aat2870.h
+++ b/include/linux/mfd/aat2870.h
@@ -149,7 +149,6 @@ struct aat2870_data {
 
 	/* for debugfs */
 	struct dentry *dentry_root;
-	struct dentry *dentry_reg;
 };
 
 struct aat2870_subdev_info {
-- 
2.22.0