tty: remove tty_lock_nested
This changes all remaining users of tty_lock_nested
to be non-recursive, which lets us kill this function.
As a consequence, we won't need to keep the lock count
any more, which allows more simplifications later.
Signed-off-by: Arnd Bergmann <[email protected]>
Cc: Alan Cox <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 75889cd..ebae344 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -313,7 +313,8 @@
struct tty_ldisc *ld;
DECLARE_WAITQUEUE(wait, current);
- tty_lock_nested(); /* always called with BTM from vt_ioctl */
+ /* always called with BTM from vt_ioctl */
+ WARN_ON(!tty_locked());
acquire_console_sem();
poke_blanked_console();
@@ -343,6 +344,5 @@
__set_current_state(TASK_RUNNING);
tty_ldisc_deref(ld);
- tty_unlock();
return 0;
}
