diff options
| -rw-r--r-- | fs/libfs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 662a28e4f66..219576c52d8 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -739,10 +739,11 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf, if (copy_from_user(attr->set_buf, buf, size)) goto out; - ret = len; /* claim we got the whole input */ attr->set_buf[size] = '\0'; val = simple_strtol(attr->set_buf, NULL, 0); - attr->set(attr->data, val); + ret = attr->set(attr->data, val); + if (ret == 0) + ret = len; /* on success, claim we got the whole input */ out: mutex_unlock(&attr->mutex); return ret; |