add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/net/6lowpan/core.c
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@@ -1,11 +1,5 @@
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-/* This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2
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- * as published by the Free Software Foundation.
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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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+// SPDX-License-Identifier: GPL-2.0-only
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+/*
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  *
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  * Authors:
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  * (C) 2015 Pengutronix, Alexander Aring <aar@pengutronix.de>
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@@ -48,9 +42,7 @@
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 	if (ret < 0)
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 		return ret;
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-	ret = lowpan_dev_debugfs_init(dev);
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-	if (ret < 0)
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-		unregister_netdevice(dev);
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+	lowpan_dev_debugfs_init(dev);
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 	return ret;
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 }
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@@ -158,9 +150,7 @@
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 {
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 	int ret;
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-	ret = lowpan_debugfs_init();
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-	if (ret < 0)
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-		return ret;
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+	lowpan_debugfs_init();
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 	ret = register_netdevice_notifier(&lowpan_notifier);
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 	if (ret < 0) {