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-rw-r--r--drivers/isdn/i4l/isdn_tty.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 3585fb1f334..2ac90242d26 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -2880,7 +2880,7 @@ isdn_tty_cmd_ATand(char **p, modem_info * info)
p[0]++;
i = 0;
while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) &&
- (i < ISDN_LMSNLEN))
+ (i < ISDN_LMSNLEN - 1))
m->lmsn[i++] = *p[0]++;
m->lmsn[i] = '\0';
break;