tty: replace BKL with a new tty_lock

As a preparation for replacing the big kernel lock
in the TTY layer, wrap all the callers in new
macros tty_lock, tty_lock_nested and tty_unlock.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index ecbe479c7d68..90b3ec0aabdd 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -1505,7 +1505,7 @@ 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();
+        tty_lock();
 
         switch (cmd) {
         case CYGETMON:
@@ -1561,7 +1561,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file,
         default:
                 ret_val = -ENOIOCTLCMD;
         }
-        unlock_kernel();
+        tty_unlock();
 
 #ifdef SERIAL_DEBUG_OTHER
         printk("cy_ioctl done\n");