From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/arm/mm/fault-armv.c | 13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/kernel/arch/arm/mm/fault-armv.c b/kernel/arch/arm/mm/fault-armv.c
index 4d75dae..0e49154 100644
--- a/kernel/arch/arm/mm/fault-armv.c
+++ b/kernel/arch/arm/mm/fault-armv.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/mm/fault-armv.c
*
* Copyright (C) 1995 Linus Torvalds
* Modifications for ARM processor (c) 1995-2002 Russell King
- *
- * 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.
*/
#include <linux/sched.h>
#include <linux/kernel.h>
@@ -20,7 +17,6 @@
#include <asm/bugs.h>
#include <asm/cacheflush.h>
#include <asm/cachetype.h>
-#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include "mm.h"
@@ -94,6 +90,7 @@
{
spinlock_t *ptl;
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
@@ -103,7 +100,11 @@
if (pgd_none_or_clear_bad(pgd))
return 0;
- pud = pud_offset(pgd, address);
+ p4d = p4d_offset(pgd, address);
+ if (p4d_none_or_clear_bad(p4d))
+ return 0;
+
+ pud = pud_offset(p4d, address);
if (pud_none_or_clear_bad(pud))
return 0;
--
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