diff options
Diffstat (limited to 'lib/find_next_bit.c')
| -rw-r--r-- | lib/find_next_bit.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/lib/find_next_bit.c b/lib/find_next_bit.c index 24c59ded47a0..b0a8767282bf 100644 --- a/lib/find_next_bit.c +++ b/lib/find_next_bit.c | |||
| @@ -160,6 +160,7 @@ EXPORT_SYMBOL(find_first_zero_bit); | |||
| 160 | #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ | 160 | #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ |
| 161 | 161 | ||
| 162 | #ifdef __BIG_ENDIAN | 162 | #ifdef __BIG_ENDIAN |
| 163 | #ifdef CONFIG_GENERIC_FIND_BIT_LE | ||
| 163 | 164 | ||
| 164 | /* include/linux/byteorder does not support "unsigned long" type */ | 165 | /* include/linux/byteorder does not support "unsigned long" type */ |
| 165 | static inline unsigned long ext2_swabp(const unsigned long * x) | 166 | static inline unsigned long ext2_swabp(const unsigned long * x) |
| @@ -185,15 +186,16 @@ static inline unsigned long ext2_swab(const unsigned long y) | |||
| 185 | #endif | 186 | #endif |
| 186 | } | 187 | } |
| 187 | 188 | ||
| 188 | unsigned long generic_find_next_zero_le_bit(const unsigned long *addr, unsigned | 189 | unsigned long find_next_zero_bit_le(const void *addr, unsigned |
| 189 | long size, unsigned long offset) | 190 | long size, unsigned long offset) |
| 190 | { | 191 | { |
| 191 | const unsigned long *p = addr + BITOP_WORD(offset); | 192 | const unsigned long *p = addr; |
| 192 | unsigned long result = offset & ~(BITS_PER_LONG - 1); | 193 | unsigned long result = offset & ~(BITS_PER_LONG - 1); |
| 193 | unsigned long tmp; | 194 | unsigned long tmp; |
| 194 | 195 | ||
| 195 | if (offset >= size) | 196 | if (offset >= size) |
| 196 | return size; | 197 | return size; |
| 198 | p += BITOP_WORD(offset); | ||
| 197 | size -= result; | 199 | size -= result; |
| 198 | offset &= (BITS_PER_LONG - 1UL); | 200 | offset &= (BITS_PER_LONG - 1UL); |
| 199 | if (offset) { | 201 | if (offset) { |
| @@ -226,18 +228,18 @@ found_middle: | |||
| 226 | found_middle_swap: | 228 | found_middle_swap: |
| 227 | return result + ffz(ext2_swab(tmp)); | 229 | return result + ffz(ext2_swab(tmp)); |
| 228 | } | 230 | } |
| 231 | EXPORT_SYMBOL(find_next_zero_bit_le); | ||
| 229 | 232 | ||
| 230 | EXPORT_SYMBOL(generic_find_next_zero_le_bit); | 233 | unsigned long find_next_bit_le(const void *addr, unsigned |
| 231 | |||
| 232 | unsigned long generic_find_next_le_bit(const unsigned long *addr, unsigned | ||
| 233 | long size, unsigned long offset) | 234 | long size, unsigned long offset) |
| 234 | { | 235 | { |
| 235 | const unsigned long *p = addr + BITOP_WORD(offset); | 236 | const unsigned long *p = addr; |
| 236 | unsigned long result = offset & ~(BITS_PER_LONG - 1); | 237 | unsigned long result = offset & ~(BITS_PER_LONG - 1); |
| 237 | unsigned long tmp; | 238 | unsigned long tmp; |
| 238 | 239 | ||
| 239 | if (offset >= size) | 240 | if (offset >= size) |
| 240 | return size; | 241 | return size; |
| 242 | p += BITOP_WORD(offset); | ||
| 241 | size -= result; | 243 | size -= result; |
| 242 | offset &= (BITS_PER_LONG - 1UL); | 244 | offset &= (BITS_PER_LONG - 1UL); |
| 243 | if (offset) { | 245 | if (offset) { |
| @@ -271,5 +273,7 @@ found_middle: | |||
| 271 | found_middle_swap: | 273 | found_middle_swap: |
| 272 | return result + __ffs(ext2_swab(tmp)); | 274 | return result + __ffs(ext2_swab(tmp)); |
| 273 | } | 275 | } |
| 274 | EXPORT_SYMBOL(generic_find_next_le_bit); | 276 | EXPORT_SYMBOL(find_next_bit_le); |
| 277 | |||
| 278 | #endif /* CONFIG_GENERIC_FIND_BIT_LE */ | ||
| 275 | #endif /* __BIG_ENDIAN */ | 279 | #endif /* __BIG_ENDIAN */ |
