Fix broken CLIR in isdn driver

I noticed that CLIR (aka "hide your calling number") in isdn_tty is broken:
The at-command parser filters out the required "R" (e.g.  ATDR089123456)
It's been broken for a *very* long time.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Matthias Goebl <matthias.goebl@goebl.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index ea5f30d4a5a2..4e5f87c1e714 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -2693,8 +2693,9 @@ isdn_tty_getdial(char *p, char *q,int cnt)
         int limit = ISDN_MSNLEN - 1;    /* MUST match the size of interface var to avoid
                                         buffer overflow */
 
-        while (strchr(" 0123456789,#.*WPTS-", *p) && *p && --cnt>0) {
+        while (strchr(" 0123456789,#.*WPTSR-", *p) && *p && --cnt>0) {
                 if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) ||
+                    ((*p == 'R') && first) ||
                     (*p == '*') || (*p == '#')) {
                         *q++ = *p;
                         limit--;