tty: Drop the lock_kernel in the private ioctl hook

We don't need the BKL here any more so it can go. In a couple of spots the
driver requirements are not clear so push the lock down into the driver.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 6 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 8d5189096470..080ade223d53 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -382,9 +382,7 @@ static int serial_ioctl(struct tty_struct *tty, struct file *file,
         /* pass on to the driver specific version of this function
            if it is available */
         if (port->serial->type->ioctl) {
-                lock_kernel();
                 retval = port->serial->type->ioctl(tty, file, cmd, arg);
-                unlock_kernel();
         } else
                 retval = -ENOIOCTLCMD;
         return retval;
@@ -413,11 +411,8 @@ static int serial_break(struct tty_struct *tty, int break_state)
         WARN_ON(!port->port.count);
         /* pass on to the driver specific version of this function
            if it is available */
-        if (port->serial->type->break_ctl) {
-                lock_kernel();
+        if (port->serial->type->break_ctl)
                 port->serial->type->break_ctl(tty, break_state);
-                unlock_kernel();
-        }
         return 0;
 }