diff options
| -rw-r--r-- | drivers/isdn/i4l/isdn_ppp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c index 1a19a0f89428..b9fed8a3bcc6 100644 --- a/drivers/isdn/i4l/isdn_ppp.c +++ b/drivers/isdn/i4l/isdn_ppp.c @@ -782,7 +782,8 @@ isdn_ppp_read(int min, struct file *file, char __user *buf, int count) is->first = b; spin_unlock_irqrestore(&is->buflock, flags); - copy_to_user(buf, save_buf, count); + if (copy_to_user(buf, save_buf, count)) + count = -EFAULT; kfree(save_buf); return count; |