diff options
Diffstat (limited to 'drivers/isdn/isdnloop')
| -rw-r--r-- | drivers/isdn/isdnloop/isdnloop.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c index 23afba46433e..c3ae2edaf6fa 100644 --- a/drivers/isdn/isdnloop/isdnloop.c +++ b/drivers/isdn/isdnloop/isdnloop.c @@ -446,7 +446,8 @@ isdnloop_readstatus(u_char __user *buf, int len, isdnloop_card * card) for (p = buf, count = 0; count < len; p++, count++) { if (card->msg_buf_read == card->msg_buf_write) return count; - put_user(*card->msg_buf_read++, p); + if (put_user(*card->msg_buf_read++, p)) + return -EFAULT; if (card->msg_buf_read > card->msg_buf_end) card->msg_buf_read = card->msg_buf; } |