Merge branch 'next' into for-linus

1 files changed, 12 insertions, 10 deletions

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 50375bb8e51d..42ae452b36b0 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -32,7 +32,7 @@ static int dev_mount = 1;
 static int dev_mount;
 #endif
 
-static rwlock_t dirlock;
+static DEFINE_MUTEX(dirlock);
 
 static int __init mount_param(char *str)
 {
@@ -93,7 +93,7 @@ static int create_path(const char *nodepath)
 {
 	int err;
 
-	read_lock(&dirlock);
+	mutex_lock(&dirlock);
 	err = dev_mkdir(nodepath, 0755);
 	if (err == -ENOENT) {
 		char *path;
@@ -101,8 +101,10 @@ static int create_path(const char *nodepath)
 
 		/* parent directories do not exist, create them */
 		path = kstrdup(nodepath, GFP_KERNEL);
-		if (!path)
-			return -ENOMEM;
+		if (!path) {
+			err = -ENOMEM;
+			goto out;
+		}
 		s = path;
 		for (;;) {
 			s = strchr(s, '/');
@@ -117,7 +119,8 @@ static int create_path(const char *nodepath)
 		}
 		kfree(path);
 	}
-	read_unlock(&dirlock);
+out:
+	mutex_unlock(&dirlock);
 	return err;
 }
 
@@ -229,7 +232,7 @@ static int delete_path(const char *nodepath)
 	if (!path)
 		return -ENOMEM;
 
-	write_lock(&dirlock);
+	mutex_lock(&dirlock);
 	for (;;) {
 		char *base;
 
@@ -241,7 +244,7 @@ static int delete_path(const char *nodepath)
 		if (err)
 			break;
 	}
-	write_unlock(&dirlock);
+	mutex_unlock(&dirlock);
 
 	kfree(path);
 	return err;
@@ -351,8 +354,7 @@ int __init devtmpfs_init(void)
 {
 	int err;
 	struct vfsmount *mnt;
-
-	rwlock_init(&dirlock);
+	char options[] = "mode=0755";
 
 	err = register_filesystem(&dev_fs_type);
 	if (err) {
@@ -361,7 +363,7 @@ int __init devtmpfs_init(void)
 		return err;
 	}
 
-	mnt = kern_mount_data(&dev_fs_type, "mode=0755");
+	mnt = kern_mount_data(&dev_fs_type, options);
 	if (IS_ERR(mnt)) {
 		err = PTR_ERR(mnt);
 		printk(KERN_ERR "devtmpfs: unable to create devtmpfs %i\n", err);