linux-kernel - [PATCH 2/2] debugfs: make return value of all debugfs helpers consistent

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Date:   Mon, 15 Apr 2019 01:25:06 -0700
From:   Ronald Tschalär <ronald@...ovation.ch>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Corbet <corbet@....net>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] debugfs: make return value of all debugfs helpers consistent

Since commit ff9fb72bc077 ("debugfs: return error values, not NULL")
almost all the debugfs helpers have stopped returning NULL. The lone
holdeout was debugfs_create_u32_array(). So fix that.

Signed-off-by: Ronald Tschalär <ronald@...ovation.ch>
---
 fs/debugfs/file.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index ddd708b09fa1..bb706d073782 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -999,8 +999,8 @@ static const struct file_operations u32_array_fops = {
  * Once array is created its size can not be changed.
  *
  * The function returns a pointer to dentry on success. If an error occurs,
- * %ERR_PTR(-ERROR) or NULL will be returned. If debugfs is not enabled in
- * the kernel, the value %ERR_PTR(-ENODEV) will be returned.
+ * %ERR_PTR(-ERROR) will be returned. If debugfs is not enabled in the kernel,
+ * the value %ERR_PTR(-ENODEV) will be returned.
  */
 struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
 					    struct dentry *parent,
@@ -1009,7 +1009,7 @@ struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
 	struct array_data *data = kmalloc(sizeof(*data), GFP_KERNEL);
 
 	if (data == NULL)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	data->array = array;
 	data->elements = elements;
-- 
2.20.1