1 files changed, 3 insertions, 12 deletions

diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index df8cd0ca97eb..f62fb9360c3f 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -1539,6 +1539,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
         printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg);       /* */
 #endif
 
+        lock_kernel();
+
         switch (cmd) {
         case CYGETMON:
                 ret_val = get_mon_info(info, argp);
@@ -1584,18 +1586,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
                 break;
 
 /* The following commands are incompletely implemented!!! */
-        case TIOCGSOFTCAR:
-                ret_val =
-                    put_user(C_CLOCAL(tty) ? 1 : 0,
-                             (unsigned long __user *)argp);
-                break;
-        case TIOCSSOFTCAR:
-                ret_val = get_user(val, (unsigned long __user *)argp);
-                if (ret_val)
-                        break;
-                tty->termios->c_cflag =
-                    ((tty->termios->c_cflag & ~CLOCAL) | (val ? CLOCAL : 0));
-                break;
         case TIOCGSERIAL:
                 ret_val = get_serial_info(info, argp);
                 break;
@@ -1605,6 +1595,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
         default:
                 ret_val = -ENOIOCTLCMD;
         }
+        unlock_kernel();
 
 #ifdef SERIAL_DEBUG_OTHER
         printk("cy_ioctl done\n");