diff options
| -rw-r--r-- | lib/seq_buf.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/seq_buf.c b/lib/seq_buf.c index 5c94e1012a91f..cb18469e1f490 100644 --- a/lib/seq_buf.c +++ b/lib/seq_buf.c @@ -306,10 +306,12 @@ int seq_buf_to_user(struct seq_buf *s, char __user *ubuf, int cnt) if (!cnt) return 0; - if (s->len <= s->readpos) + len = seq_buf_used(s); + + if (len <= s->readpos) return -EBUSY; - len = seq_buf_used(s) - s->readpos; + len -= s->readpos; if (cnt > len) cnt = len; ret = copy_to_user(ubuf, s->buffer + s->readpos, cnt); |