disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/iio/trigger.h
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@@ -1,10 +1,7 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /* The industrial I/O core, trigger handling functions
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  *
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  * Copyright (c) 2008 Jonathan Cameron
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published by
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- * the Free Software Foundation.
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  */
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 #include <linux/irq.h>
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 #include <linux/module.h>
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@@ -143,9 +140,6 @@
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  * @trig_info:	trigger to be unregistered
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  **/
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 void iio_trigger_unregister(struct iio_trigger *trig_info);
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-
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-void devm_iio_trigger_unregister(struct device *dev,
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-				 struct iio_trigger *trig_info);
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 /**
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  * iio_trigger_set_immutable() - set an immutable trigger on destination