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-rw-r--r--fs/sysfs/file.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index b502c7197ec0..fd4b6dc03d2d 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -444,14 +444,25 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
444{ 444{
445 struct sysfs_dirent * parent_sd = dir->d_fsdata; 445 struct sysfs_dirent * parent_sd = dir->d_fsdata;
446 umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG; 446 umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG;
447 int error = -EEXIST; 447 struct sysfs_dirent *sd;
448 int error = 0;
448 449
449 mutex_lock(&dir->d_inode->i_mutex); 450 mutex_lock(&dir->d_inode->i_mutex);
450 if (!sysfs_dirent_exist(parent_sd, attr->name))
451 error = sysfs_make_dirent(parent_sd, NULL, (void *)attr,
452 mode, type);
453 mutex_unlock(&dir->d_inode->i_mutex);
454 451
452 if (sysfs_dirent_exist(parent_sd, attr->name)) {
453 error = -EEXIST;
454 goto out_unlock;
455 }
456
457 sd = sysfs_new_dirent((void *)attr, mode, type);
458 if (!sd) {
459 error = -ENOMEM;
460 goto out_unlock;
461 }
462 sysfs_attach_dirent(sd, parent_sd, NULL);
463
464 out_unlock:
465 mutex_unlock(&dir->d_inode->i_mutex);
455 return error; 466 return error;
456} 467}
457 468