disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/extcon-provider.h
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@@ -1,18 +1,10 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * External Connector (extcon) framework
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  * - linux/include/linux/extcon-provider.h for extcon provider device driver.
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  *
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  * Copyright (C) 2017 Samsung Electronics
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  * Author: Chanwoo Choi <cw00.choi@samsung.com>
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- *
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- * This software is licensed under the terms of the GNU General Public
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- * License version 2, as published by the Free Software Foundation, and
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- * may be copied, distributed, and modified under those terms.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  */
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 #ifndef __LINUX_EXTCON_PROVIDER_H__
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@@ -25,30 +17,30 @@
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 #if IS_ENABLED(CONFIG_EXTCON)
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 /* Following APIs register/unregister the extcon device. */
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-extern int extcon_dev_register(struct extcon_dev *edev);
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-extern void extcon_dev_unregister(struct extcon_dev *edev);
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-extern int devm_extcon_dev_register(struct device *dev,
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+int extcon_dev_register(struct extcon_dev *edev);
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+void extcon_dev_unregister(struct extcon_dev *edev);
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+int devm_extcon_dev_register(struct device *dev,
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 				struct extcon_dev *edev);
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-extern void devm_extcon_dev_unregister(struct device *dev,
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+void devm_extcon_dev_unregister(struct device *dev,
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 				struct extcon_dev *edev);
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 /* Following APIs allocate/free the memory of the extcon device. */
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-extern struct extcon_dev *extcon_dev_allocate(const unsigned int *cable);
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-extern void extcon_dev_free(struct extcon_dev *edev);
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-extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
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+struct extcon_dev *extcon_dev_allocate(const unsigned int *cable);
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+void extcon_dev_free(struct extcon_dev *edev);
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+struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
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 				const unsigned int *cable);
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-extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
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+void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
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 /* Synchronize the state and property value for each external connector. */
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-extern int extcon_sync(struct extcon_dev *edev, unsigned int id);
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+int extcon_sync(struct extcon_dev *edev, unsigned int id);
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 /*
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  * Following APIs set the connected state of each external connector.
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  * The 'id' argument indicates the defined external connector.
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  */
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-extern int extcon_set_state(struct extcon_dev *edev, unsigned int id,
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+int extcon_set_state(struct extcon_dev *edev, unsigned int id,
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 				bool state);
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-extern int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
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+int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
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 				bool state);
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 /*
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@@ -60,13 +52,13 @@
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  * for each external connector. They are used to set the capability of the
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  * property of each external connector based on the id and property.
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  */
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-extern int extcon_set_property(struct extcon_dev *edev, unsigned int id,
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+int extcon_set_property(struct extcon_dev *edev, unsigned int id,
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 				unsigned int prop,
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 				union extcon_property_value prop_val);
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-extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
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+int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
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 				unsigned int prop,
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 				union extcon_property_value prop_val);
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-extern int extcon_set_property_capability(struct extcon_dev *edev,
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+int extcon_set_property_capability(struct extcon_dev *edev,
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 				unsigned int id, unsigned int prop);
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 #else /* CONFIG_EXTCON */