[PATCH] fix processing of the last byte in isdn_readbchan_tty()

The changes in the tty handling contain a bug while accessing
the last byte in the skb. Since special sequence for control of
DTMF and FAX via ttyI* devices handled via this path, these services
do not work anymore.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index 81accdf35168c4607358de042a379684d715f2d0..b26e509ec7593a89ba358db502418dce516b3f61 100644 (file)
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -933,7 +933,7 @@ isdn_readbchan_tty(int di, int channel, struct tty_struct *tty, int cisco_hack)
                        count_put = count_pull;
                        if(count_put > 1)
                                tty_insert_flip_string(tty, skb->data, count_put - 1);
-                       last = skb->data[count_put] - 1;
+                       last = skb->data[count_put - 1];
                        len -= count_put;
 #ifdef CONFIG_ISDN_AUDIO
                }