debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/video/console/dummycon.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  linux/drivers/video/dummycon.c -- A dummy console driver
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  *
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@@ -33,6 +34,8 @@
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 void dummycon_register_output_notifier(struct notifier_block *nb)
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 {
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+	WARN_CONSOLE_UNLOCKED();
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+
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 	raw_notifier_chain_register(&dummycon_output_nh, nb);
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 	if (dummycon_putc_called)
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@@ -41,11 +44,15 @@
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 void dummycon_unregister_output_notifier(struct notifier_block *nb)
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 {
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+	WARN_CONSOLE_UNLOCKED();
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+
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 	raw_notifier_chain_unregister(&dummycon_output_nh, nb);
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 }
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 static void dummycon_putc(struct vc_data *vc, int c, int ypos, int xpos)
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 {
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+	WARN_CONSOLE_UNLOCKED();
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+
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 	dummycon_putc_called = true;
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 	raw_notifier_call_chain(&dummycon_output_nh, 0, NULL);
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 }