change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/um/include/asm/mmu_context.h
..
..
@@ -1,6 +1,6 @@
1
+/* SPDX-License-Identifier: GPL-2.0 */
1
2
 /* 
2
3
  * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3
- * Licensed under the GPL
4
4
  */
5
5
 
6
6
 #ifndef __UM_MMU_CONTEXT_H
..
..
@@ -8,6 +8,7 @@
8
8
 
9
9
 #include <linux/sched.h>
10
10
 #include <linux/mm_types.h>
11
+#include <linux/mmap_lock.h>
11
12
 
12
13
 #include <asm/mmu.h>
13
14
 
..
..
@@ -22,15 +23,9 @@
22
23
 }
23
24
 extern void arch_exit_mmap(struct mm_struct *mm);
24
25
 static inline void arch_unmap(struct mm_struct *mm,
25
-			struct vm_area_struct *vma,
26
26
 			unsigned long start, unsigned long end)
27
27
 {
28
28
 }
29
-static inline void arch_bprm_mm_init(struct mm_struct *mm,
30
-				     struct vm_area_struct *vma)
31
-{
32
-}
33
-
34
29
 static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
35
30
 		bool write, bool execute, bool foreign)
36
31
 {
..
..
@@ -53,9 +48,9 @@
53
48
 	 * when the new ->mm is used for the first time.
54
49
 	 */
55
50
 	__switch_mm(&new->context.id);
56
-	down_write_nested(&new->mmap_sem, 1);
51
+	mmap_write_lock_nested(new, SINGLE_DEPTH_NESTING);
57
52
 	uml_setup_stubs(new);
58
-	up_write(&new->mmap_sem);
53
+	mmap_write_unlock(new);
59
54
 }
60
55
 
61
56
 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,