diff options
author | Mark Salter <msalter@redhat.com> | 2014-01-23 18:53:52 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 19:36:54 -0500 |
commit | 1c5c8043f5f4402105e87caec228373bf76d7793 (patch) | |
tree | 4078cc2f4808d08b938a9189240d443b13216f24 /arch/metag | |
parent | 978c5584015e9a843f96586a725141a80ff2109d (diff) |
metag: use generic fixmap.h
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/metag')
-rw-r--r-- | arch/metag/include/asm/fixmap.h | 32 |
1 files changed, 1 insertions, 31 deletions
diff --git a/arch/metag/include/asm/fixmap.h b/arch/metag/include/asm/fixmap.h index 33312751c92b..af621b041739 100644 --- a/arch/metag/include/asm/fixmap.h +++ b/arch/metag/include/asm/fixmap.h | |||
@@ -51,37 +51,7 @@ enum fixed_addresses { | |||
51 | #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) | 51 | #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) |
52 | #define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) | 52 | #define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) |
53 | 53 | ||
54 | #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) | 54 | #include <asm-generic/fixmap.h> |
55 | #define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) | ||
56 | |||
57 | extern void __this_fixmap_does_not_exist(void); | ||
58 | /* | ||
59 | * 'index to address' translation. If anyone tries to use the idx | ||
60 | * directly without tranlation, we catch the bug with a NULL-deference | ||
61 | * kernel oops. Illegal ranges of incoming indices are caught too. | ||
62 | */ | ||
63 | static inline unsigned long fix_to_virt(const unsigned int idx) | ||
64 | { | ||
65 | /* | ||
66 | * this branch gets completely eliminated after inlining, | ||
67 | * except when someone tries to use fixaddr indices in an | ||
68 | * illegal way. (such as mixing up address types or using | ||
69 | * out-of-range indices). | ||
70 | * | ||
71 | * If it doesn't get removed, the linker will complain | ||
72 | * loudly with a reasonably clear error message.. | ||
73 | */ | ||
74 | if (idx >= __end_of_fixed_addresses) | ||
75 | __this_fixmap_does_not_exist(); | ||
76 | |||
77 | return __fix_to_virt(idx); | ||
78 | } | ||
79 | |||
80 | static inline unsigned long virt_to_fix(const unsigned long vaddr) | ||
81 | { | ||
82 | BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); | ||
83 | return __virt_to_fix(vaddr); | ||
84 | } | ||
85 | 55 | ||
86 | #define kmap_get_fixmap_pte(vaddr) \ | 56 | #define kmap_get_fixmap_pte(vaddr) \ |
87 | pte_offset_kernel( \ | 57 | pte_offset_kernel( \ |