diff options
Diffstat (limited to 'lib/find_next_bit.c')
-rw-r--r-- | lib/find_next_bit.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c index b0a8767282bf..4bd75a73ba00 100644 --- a/lib/find_next_bit.c +++ b/lib/find_next_bit.c | |||
@@ -16,7 +16,7 @@ | |||
16 | 16 | ||
17 | #define BITOP_WORD(nr) ((nr) / BITS_PER_LONG) | 17 | #define BITOP_WORD(nr) ((nr) / BITS_PER_LONG) |
18 | 18 | ||
19 | #ifdef CONFIG_GENERIC_FIND_NEXT_BIT | 19 | #ifndef find_next_bit |
20 | /* | 20 | /* |
21 | * Find the next set bit in a memory region. | 21 | * Find the next set bit in a memory region. |
22 | */ | 22 | */ |
@@ -59,7 +59,9 @@ found_middle: | |||
59 | return result + __ffs(tmp); | 59 | return result + __ffs(tmp); |
60 | } | 60 | } |
61 | EXPORT_SYMBOL(find_next_bit); | 61 | EXPORT_SYMBOL(find_next_bit); |
62 | #endif | ||
62 | 63 | ||
64 | #ifndef find_next_zero_bit | ||
63 | /* | 65 | /* |
64 | * This implementation of find_{first,next}_zero_bit was stolen from | 66 | * This implementation of find_{first,next}_zero_bit was stolen from |
65 | * Linus' asm-alpha/bitops.h. | 67 | * Linus' asm-alpha/bitops.h. |
@@ -103,9 +105,9 @@ found_middle: | |||
103 | return result + ffz(tmp); | 105 | return result + ffz(tmp); |
104 | } | 106 | } |
105 | EXPORT_SYMBOL(find_next_zero_bit); | 107 | EXPORT_SYMBOL(find_next_zero_bit); |
106 | #endif /* CONFIG_GENERIC_FIND_NEXT_BIT */ | 108 | #endif |
107 | 109 | ||
108 | #ifdef CONFIG_GENERIC_FIND_FIRST_BIT | 110 | #ifndef find_first_bit |
109 | /* | 111 | /* |
110 | * Find the first set bit in a memory region. | 112 | * Find the first set bit in a memory region. |
111 | */ | 113 | */ |
@@ -131,7 +133,9 @@ found: | |||
131 | return result + __ffs(tmp); | 133 | return result + __ffs(tmp); |
132 | } | 134 | } |
133 | EXPORT_SYMBOL(find_first_bit); | 135 | EXPORT_SYMBOL(find_first_bit); |
136 | #endif | ||
134 | 137 | ||
138 | #ifndef find_first_zero_bit | ||
135 | /* | 139 | /* |
136 | * Find the first cleared bit in a memory region. | 140 | * Find the first cleared bit in a memory region. |
137 | */ | 141 | */ |
@@ -157,10 +161,9 @@ found: | |||
157 | return result + ffz(tmp); | 161 | return result + ffz(tmp); |
158 | } | 162 | } |
159 | EXPORT_SYMBOL(find_first_zero_bit); | 163 | EXPORT_SYMBOL(find_first_zero_bit); |
160 | #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ | 164 | #endif |
161 | 165 | ||
162 | #ifdef __BIG_ENDIAN | 166 | #ifdef __BIG_ENDIAN |
163 | #ifdef CONFIG_GENERIC_FIND_BIT_LE | ||
164 | 167 | ||
165 | /* include/linux/byteorder does not support "unsigned long" type */ | 168 | /* include/linux/byteorder does not support "unsigned long" type */ |
166 | static inline unsigned long ext2_swabp(const unsigned long * x) | 169 | static inline unsigned long ext2_swabp(const unsigned long * x) |
@@ -186,6 +189,7 @@ static inline unsigned long ext2_swab(const unsigned long y) | |||
186 | #endif | 189 | #endif |
187 | } | 190 | } |
188 | 191 | ||
192 | #ifndef find_next_zero_bit_le | ||
189 | unsigned long find_next_zero_bit_le(const void *addr, unsigned | 193 | unsigned long find_next_zero_bit_le(const void *addr, unsigned |
190 | long size, unsigned long offset) | 194 | long size, unsigned long offset) |
191 | { | 195 | { |
@@ -229,7 +233,9 @@ found_middle_swap: | |||
229 | return result + ffz(ext2_swab(tmp)); | 233 | return result + ffz(ext2_swab(tmp)); |
230 | } | 234 | } |
231 | EXPORT_SYMBOL(find_next_zero_bit_le); | 235 | EXPORT_SYMBOL(find_next_zero_bit_le); |
236 | #endif | ||
232 | 237 | ||
238 | #ifndef find_next_bit_le | ||
233 | unsigned long find_next_bit_le(const void *addr, unsigned | 239 | unsigned long find_next_bit_le(const void *addr, unsigned |
234 | long size, unsigned long offset) | 240 | long size, unsigned long offset) |
235 | { | 241 | { |
@@ -274,6 +280,6 @@ found_middle_swap: | |||
274 | return result + __ffs(ext2_swab(tmp)); | 280 | return result + __ffs(ext2_swab(tmp)); |
275 | } | 281 | } |
276 | EXPORT_SYMBOL(find_next_bit_le); | 282 | EXPORT_SYMBOL(find_next_bit_le); |
283 | #endif | ||
277 | 284 | ||
278 | #endif /* CONFIG_GENERIC_FIND_BIT_LE */ | ||
279 | #endif /* __BIG_ENDIAN */ | 285 | #endif /* __BIG_ENDIAN */ |