X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fisdn%2Fisdnloop%2Fisdnloop.c;h=9a66524f1d4cb2c37ae2d3a1e3214b40563861b3;hb=7172c64a7cee4dfa95864f49c914f7ea8cf497c8;hp=fabbd461603e217befac34687aa5eb08f7ebb575;hpb=3967a72a825e44bff5d10f516e90b6f59f59e599;p=linux-2.6.git

diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c
index fabbd4616..9a66524f1 100644
--- a/drivers/isdn/isdnloop/isdnloop.c
+++ b/drivers/isdn/isdnloop/isdnloop.c
@@ -451,7 +451,8 @@ 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;
 	}