From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/arch/arc/include/asm/futex.h | 12 +++++-------
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/kernel/arch/arc/include/asm/futex.h b/kernel/arch/arc/include/asm/futex.h
index eb887dd..607d1c1 100644
--- a/kernel/arch/arc/include/asm/futex.h
+++ b/kernel/arch/arc/include/asm/futex.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*
* Vineetg: August 2010: From Android kernel work
*/
@@ -78,10 +75,12 @@
{
int oldval = 0, ret;
+ if (!access_ok(uaddr, sizeof(u32)))
+ return -EFAULT;
+
#ifndef CONFIG_ARC_HAS_LLSC
preempt_disable(); /* to guarantee atomic r-m-w of futex op */
#endif
- pagefault_disable();
switch (op) {
case FUTEX_OP_SET:
@@ -104,7 +103,6 @@
ret = -ENOSYS;
}
- pagefault_enable();
#ifndef CONFIG_ARC_HAS_LLSC
preempt_enable();
#endif
@@ -126,7 +124,7 @@
int ret = 0;
u32 existval;
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
#ifndef CONFIG_ARC_HAS_LLSC
--
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