From 645e752c5a84baeb21015cdc85fc05b7d16312c8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 01:13:52 +0000
Subject: [PATCH] disable i2c1

---
 kernel/arch/arm64/lib/copy_from_user.S |   56 ++++++++++++++++++++++----------------------------------
 1 files changed, 22 insertions(+), 34 deletions(-)

diff --git a/kernel/arch/arm64/lib/copy_from_user.S b/kernel/arch/arm64/lib/copy_from_user.S
index 7cd6eea..957a6d0 100644
--- a/kernel/arch/arm64/lib/copy_from_user.S
+++ b/kernel/arch/arm64/lib/copy_from_user.S
@@ -1,23 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2012 ARM Ltd.
- *
- * 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.
- *
- * 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, see <http://www.gnu.org/licenses/>.
  */
 
 #include <linux/linkage.h>
 
-#include <asm/cache.h>
 #include <asm/asm-uaccess.h>
+#include <asm/assembler.h>
+#include <asm/cache.h>
 
 /*
  * Copy from user space to a kernel buffer (alignment handled by the hardware)
@@ -30,49 +20,48 @@
  *	x0 - bytes not copied
  */
 
-	.macro ldrb1 ptr, regB, val
-	uao_user_alternative 9998f, ldrb, ldtrb, \ptr, \regB, \val
+	.macro ldrb1 reg, ptr, val
+	uao_user_alternative 9998f, ldrb, ldtrb, \reg, \ptr, \val
 	.endm
 
-	.macro strb1 ptr, regB, val
-	strb \ptr, [\regB], \val
+	.macro strb1 reg, ptr, val
+	strb \reg, [\ptr], \val
 	.endm
 
-	.macro ldrh1 ptr, regB, val
-	uao_user_alternative 9997f, ldrh, ldtrh, \ptr, \regB, \val
+	.macro ldrh1 reg, ptr, val
+	uao_user_alternative 9997f, ldrh, ldtrh, \reg, \ptr, \val
 	.endm
 
-	.macro strh1 ptr, regB, val
-	strh \ptr, [\regB], \val
+	.macro strh1 reg, ptr, val
+	strh \reg, [\ptr], \val
 	.endm
 
-	.macro ldr1 ptr, regB, val
-	uao_user_alternative 9997f, ldr, ldtr, \ptr, \regB, \val
+	.macro ldr1 reg, ptr, val
+	uao_user_alternative 9997f, ldr, ldtr, \reg, \ptr, \val
 	.endm
 
-	.macro str1 ptr, regB, val
-	str \ptr, [\regB], \val
+	.macro str1 reg, ptr, val
+	str \reg, [\ptr], \val
 	.endm
 
-	.macro ldp1 ptr, regB, regC, val
-	uao_ldp 9997f, \ptr, \regB, \regC, \val
+	.macro ldp1 reg1, reg2, ptr, val
+	uao_ldp 9997f, \reg1, \reg2, \ptr, \val
 	.endm
 
-	.macro stp1 ptr, regB, regC, val
-	stp \ptr, \regB, [\regC], \val
+	.macro stp1 reg1, reg2, ptr, val
+	stp \reg1, \reg2, [\ptr], \val
 	.endm
 
 end	.req	x5
 srcin	.req	x15
-ENTRY(__arch_copy_from_user)
-	uaccess_enable_not_uao x3, x4, x5
+SYM_FUNC_START(__arch_copy_from_user)
 	add	end, x0, x2
 	mov	srcin, x1
 #include "copy_template.S"
-	uaccess_disable_not_uao x3, x4
 	mov	x0, #0				// Nothing to copy
 	ret
-ENDPROC(__arch_copy_from_user)
+SYM_FUNC_END(__arch_copy_from_user)
+EXPORT_SYMBOL(__arch_copy_from_user)
 
 	.section .fixup,"ax"
 	.align	2
@@ -82,6 +71,5 @@
 USER(9998f, ldtrb tmp1w, [srcin])
 	strb	tmp1w, [dst], #1
 9998:	sub	x0, end, dst			// bytes not copied
-	uaccess_disable_not_uao x3, x4
 	ret
 	.previous

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