[PATCH 01/16] console: introduce console_lock guard()s

["Jiri Slaby (SUSE)" <jirislaby@kernel.org>]

Having this, guards like these work:
  guard(console_lock)();
or
  scoped_guard(console_lock) {
    ...
  }

See e.g. "vc_screen: use guard()s" later in this series.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
---
 include/linux/console.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/console.h b/include/linux/console.h
index 8f10d0a85bb4..031a58dc2b91 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -666,6 +666,8 @@ void vcs_remove_sysfs(int index);
  */
 extern atomic_t ignore_console_lock_warning;
 
+DEFINE_LOCK_GUARD_0(console_lock, console_lock(), console_unlock());
+
 extern void console_init(void);
 
 /* For deferred console takeover */
-- 
2.50.1