修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/arm64/lib/clear_user.S
..
..
@@ -1,23 +1,13 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
1
2
 /*
2
3
  * Based on arch/arm/lib/clear_user.S
3
4
  *
4
5
  * Copyright (C) 2012 ARM Ltd.
5
- *
6
- * This program is free software; you can redistribute it and/or modify
7
- * it under the terms of the GNU General Public License version 2 as
8
- * published by the Free Software Foundation.
9
- *
10
- * This program is distributed in the hope that it will be useful,
11
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
- * GNU General Public License for more details.
14
- *
15
- * You should have received a copy of the GNU General Public License
16
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
6
  */
18
7
 #include <linux/linkage.h>
19
8
 
20
9
 #include <asm/asm-uaccess.h>
10
+#include <asm/assembler.h>
21
11
 
22
12
 	.text
23
13
 
..
..
@@ -29,8 +19,7 @@
29
19
  *
30
20
  * Alignment fixed up by hardware.
31
21
  */
32
-ENTRY(__arch_clear_user)
33
-	uaccess_enable_not_uao x2, x3, x4
22
+SYM_FUNC_START(__arch_clear_user)
34
23
 	mov	x2, x1			// save the size for fixup return
35
24
 	subs	x1, x1, #8
36
25
 	b.mi	2f
..
..
@@ -50,13 +39,12 @@
50
39
 	b.mi	5f
51
40
 uao_user_alternative 9f, strb, sttrb, wzr, x0, 0
52
41
 5:	mov	x0, #0
53
-	uaccess_disable_not_uao x2, x3
54
42
 	ret
55
-ENDPROC(__arch_clear_user)
43
+SYM_FUNC_END(__arch_clear_user)
44
+EXPORT_SYMBOL(__arch_clear_user)
56
45
 
57
46
 	.section .fixup,"ax"
58
47
 	.align	2
59
48
 9:	mov	x0, x2			// return the original size
60
-	uaccess_disable_not_uao x2, x3
61
49
 	ret
62
50
 	.previous