From 10ebd8556b7990499c896a550e3d416b444211e6 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 02:23:07 +0000
Subject: [PATCH] add led
---
kernel/arch/parisc/lib/memcpy.c | 28 +++++-----------------------
1 files changed, 5 insertions(+), 23 deletions(-)
diff --git a/kernel/arch/parisc/lib/memcpy.c b/kernel/arch/parisc/lib/memcpy.c
index 865a7f7..4b75388 100644
--- a/kernel/arch/parisc/lib/memcpy.c
+++ b/kernel/arch/parisc/lib/memcpy.c
@@ -1,26 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Optimized memory copy routines.
*
* Copyright (C) 2004 Randolph Chung <tausq@debian.org>
* Copyright (C) 2013-2017 Helge Deller <deller@gmx.de>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
* Portions derived from the GNU C Library
* Copyright (C) 1991, 1997, 2003 Free Software Foundation, Inc.
- *
*/
#include <linux/module.h>
@@ -71,14 +57,10 @@
EXPORT_SYMBOL(raw_copy_in_user);
EXPORT_SYMBOL(memcpy);
-long probe_kernel_read(void *dst, const void *src, size_t size)
+bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
{
- unsigned long addr = (unsigned long)src;
-
- if (addr < PAGE_SIZE)
- return -EFAULT;
-
+ if ((unsigned long)unsafe_src < PAGE_SIZE)
+ return false;
/* check for I/O space F_EXTEND(0xfff00000) access as well? */
-
- return __probe_kernel_read(dst, src, size);
+ return true;
}
--
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