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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4c90de4dd3
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Paul Burton <paul.burton@mips.com>
43 lines
983 B
C
43 lines
983 B
C
/*
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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
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* by the Free Software Foundation.
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*
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* Copyright (C) 2013 John Crispin <john@phrozen.org>
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*/
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#define BOOTROM_OFFSET 0x10118000
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#define BOOTROM_SIZE 0x8000
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static void __iomem *membase = (void __iomem *) KSEG1ADDR(BOOTROM_OFFSET);
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static int bootrom_show(struct seq_file *s, void *unused)
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{
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seq_write(s, membase, BOOTROM_SIZE);
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return 0;
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}
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static int bootrom_open(struct inode *inode, struct file *file)
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{
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return single_open(file, bootrom_show, NULL);
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}
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static const struct file_operations bootrom_file_ops = {
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.open = bootrom_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int bootrom_setup(void)
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{
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debugfs_create_file("bootrom", 0444, NULL, NULL, &bootrom_file_ops);
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return 0;
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}
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postcore_initcall(bootrom_setup);
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