diff options
Diffstat (limited to 'drivers/video/console/dummycon.c')
| -rw-r--r-- | drivers/video/console/dummycon.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c index 45ad925ad5f8..2a0d0bda7faa 100644 --- a/drivers/video/console/dummycon.c +++ b/drivers/video/console/dummycon.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/video/dummycon.c -- A dummy console driver * @@ -33,6 +34,8 @@ static bool dummycon_putc_called; void dummycon_register_output_notifier(struct notifier_block *nb) { + WARN_CONSOLE_UNLOCKED(); + raw_notifier_chain_register(&dummycon_output_nh, nb); if (dummycon_putc_called) @@ -41,11 +44,15 @@ void dummycon_register_output_notifier(struct notifier_block *nb) void dummycon_unregister_output_notifier(struct notifier_block *nb) { + WARN_CONSOLE_UNLOCKED(); + raw_notifier_chain_unregister(&dummycon_output_nh, nb); } static void dummycon_putc(struct vc_data *vc, int c, int ypos, int xpos) { + WARN_CONSOLE_UNLOCKED(); + dummycon_putc_called = true; raw_notifier_call_chain(&dummycon_output_nh, 0, NULL); } |