add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/mm/sc-debugfs.c
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@@ -1,11 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (C) 2015 Imagination Technologies
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  * Author: Paul Burton <paul.burton@mips.com>
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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 as published by the
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- * Free Software Foundation; either version 2 of the License, or (at your
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- * option) any later version.
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  */
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 #include <asm/bcache.h>
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@@ -55,20 +51,11 @@
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 static int __init sc_debugfs_init(void)
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 {
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-	struct dentry *dir, *file;
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-
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-	if (!mips_debugfs_dir)
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-		return -ENODEV;
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+	struct dentry *dir;
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 	dir = debugfs_create_dir("l2cache", mips_debugfs_dir);
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-	if (IS_ERR(dir))
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-		return PTR_ERR(dir);
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-
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-	file = debugfs_create_file("prefetch", S_IRUGO | S_IWUSR, dir,
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-				   NULL, &sc_prefetch_fops);
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-	if (!file)
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-		return -ENOMEM;
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-
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+	debugfs_create_file("prefetch", S_IRUGO | S_IWUSR, dir, NULL,
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+			    &sc_prefetch_fops);
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 	return 0;
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 }
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 late_initcall(sc_debugfs_init);