linux-kernel - [PATCH v2] sysfs: Removed dup_name entirely in sysfs

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Date:	Mon, 30 Apr 2012 15:16:56 +0530
From:	Sasikantha babu <sasikanth.v19@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org,
	Sasikantha babu <sasikanth.v19@...il.com>
Subject: [PATCH v2] sysfs: Removed dup_name entirely in sysfs_rename

Since no one using "dup_name", removed it completely in sysfs_rename, 

Signed-off-by: Sasikantha babu <sasikanth.v19@...il.com>
---
 fs/sysfs/dir.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 35a36d3..24fa995 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -858,7 +858,6 @@ int sysfs_rename(struct sysfs_dirent *sd,
 	struct sysfs_dirent *new_parent_sd, const void *new_ns,
 	const char *new_name)
 {
-	const char *dup_name = NULL;
 	int error;
 
 	mutex_lock(&sysfs_mutex);
@@ -875,11 +874,11 @@ int sysfs_rename(struct sysfs_dirent *sd,
 	/* rename sysfs_dirent */
 	if (strcmp(sd->s_name, new_name) != 0) {
 		error = -ENOMEM;
-		new_name = dup_name = kstrdup(new_name, GFP_KERNEL);
+		new_name = kstrdup(new_name, GFP_KERNEL);
 		if (!new_name)
 			goto out;
 
-		dup_name = sd->s_name;
+		kfree(sd->s_name);
 		sd->s_name = new_name;
 	}
 
@@ -895,7 +894,6 @@ int sysfs_rename(struct sysfs_dirent *sd,
 	error = 0;
  out:
 	mutex_unlock(&sysfs_mutex);
-	kfree(dup_name);
 	return error;
 }
 
-- 
1.7.3.4

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