diff options
Diffstat (limited to 'arch/arm/kernel/suspend.c')
-rw-r--r-- | arch/arm/kernel/suspend.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index 93a22d282c16..1794cc3b0f18 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c | |||
@@ -1,13 +1,12 @@ | |||
1 | #include <linux/init.h> | 1 | #include <linux/init.h> |
2 | 2 | ||
3 | #include <asm/idmap.h> | ||
3 | #include <asm/pgalloc.h> | 4 | #include <asm/pgalloc.h> |
4 | #include <asm/pgtable.h> | 5 | #include <asm/pgtable.h> |
5 | #include <asm/memory.h> | 6 | #include <asm/memory.h> |
6 | #include <asm/suspend.h> | 7 | #include <asm/suspend.h> |
7 | #include <asm/tlbflush.h> | 8 | #include <asm/tlbflush.h> |
8 | 9 | ||
9 | static pgd_t *suspend_pgd; | ||
10 | |||
11 | extern int __cpu_suspend(unsigned long, int (*)(unsigned long)); | 10 | extern int __cpu_suspend(unsigned long, int (*)(unsigned long)); |
12 | extern void cpu_resume_mmu(void); | 11 | extern void cpu_resume_mmu(void); |
13 | 12 | ||
@@ -21,7 +20,7 @@ void __cpu_suspend_save(u32 *ptr, u32 ptrsz, u32 sp, u32 *save_ptr) | |||
21 | *save_ptr = virt_to_phys(ptr); | 20 | *save_ptr = virt_to_phys(ptr); |
22 | 21 | ||
23 | /* This must correspond to the LDM in cpu_resume() assembly */ | 22 | /* This must correspond to the LDM in cpu_resume() assembly */ |
24 | *ptr++ = virt_to_phys(suspend_pgd); | 23 | *ptr++ = virt_to_phys(idmap_pgd); |
25 | *ptr++ = sp; | 24 | *ptr++ = sp; |
26 | *ptr++ = virt_to_phys(cpu_do_resume); | 25 | *ptr++ = virt_to_phys(cpu_do_resume); |
27 | 26 | ||
@@ -42,7 +41,7 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) | |||
42 | struct mm_struct *mm = current->active_mm; | 41 | struct mm_struct *mm = current->active_mm; |
43 | int ret; | 42 | int ret; |
44 | 43 | ||
45 | if (!suspend_pgd) | 44 | if (!idmap_pgd) |
46 | return -EINVAL; | 45 | return -EINVAL; |
47 | 46 | ||
48 | /* | 47 | /* |
@@ -59,14 +58,3 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) | |||
59 | 58 | ||
60 | return ret; | 59 | return ret; |
61 | } | 60 | } |
62 | |||
63 | static int __init cpu_suspend_init(void) | ||
64 | { | ||
65 | suspend_pgd = pgd_alloc(&init_mm); | ||
66 | if (suspend_pgd) { | ||
67 | unsigned long addr = virt_to_phys(cpu_resume_mmu); | ||
68 | identity_mapping_add(suspend_pgd, addr, addr + SECTION_SIZE); | ||
69 | } | ||
70 | return suspend_pgd ? 0 : -ENOMEM; | ||
71 | } | ||
72 | core_initcall(cpu_suspend_init); | ||