isdn: fix strlen() usage

There was a missing "else" statement so the original code overflowed if
->master->name was too long.  Also the ->slave and ->master buffers can
hold names with 9 characters and a NULL so I cleaned it up to allow
another character.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 8c85d1e88cc6..26d44c3ca1d8 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -2924,16 +2924,17 @@ isdn_net_getcfg(isdn_net_ioctl_cfg * cfg)
                 cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
                 cfg->dialwait = lp->dialwait / HZ;
                 if (lp->slave) {
-                        if (strlen(lp->slave->name) > 8)
+                        if (strlen(lp->slave->name) >= 10)
                                 strcpy(cfg->slave, "too-long");
                         else
                                 strcpy(cfg->slave, lp->slave->name);
                 } else
                         cfg->slave[0] = '\0';
                 if (lp->master) {
-                        if (strlen(lp->master->name) > 8)
+                        if (strlen(lp->master->name) >= 10)
                                 strcpy(cfg->master, "too-long");
-                        strcpy(cfg->master, lp->master->name);
+                        else
+                                strcpy(cfg->master, lp->master->name);
                 } else
                         cfg->master[0] = '\0';
                 return 0;