diff options
Diffstat (limited to 'lib/crc32.c')
| -rw-r--r-- | lib/crc32.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/lib/crc32.c b/lib/crc32.c index ede6131f66fc..fddd424ff224 100644 --- a/lib/crc32.c +++ b/lib/crc32.c @@ -37,7 +37,7 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>"); MODULE_DESCRIPTION("Various CRC32 calculations"); MODULE_LICENSE("GPL"); -u32 __pure crc32_le_base(u32 crc, const u8 *p, size_t len) +u32 crc32_le_base(u32 crc, const u8 *p, size_t len) { while (len--) crc = (crc >> 8) ^ crc32table_le[(crc & 255) ^ *p++]; @@ -45,20 +45,20 @@ u32 __pure crc32_le_base(u32 crc, const u8 *p, size_t len) } EXPORT_SYMBOL(crc32_le_base); -u32 __pure crc32c_le_base(u32 crc, const u8 *p, size_t len) +u32 crc32c_base(u32 crc, const u8 *p, size_t len) { while (len--) crc = (crc >> 8) ^ crc32ctable_le[(crc & 255) ^ *p++]; return crc; } -EXPORT_SYMBOL(crc32c_le_base); +EXPORT_SYMBOL(crc32c_base); /* * This multiplies the polynomials x and y modulo the given modulus. * This follows the "little-endian" CRC convention that the lsbit * represents the highest power of x, and the msbit represents x^0. */ -static u32 __attribute_const__ gf2_multiply(u32 x, u32 y, u32 modulus) +static u32 gf2_multiply(u32 x, u32 y, u32 modulus) { u32 product = x & 1 ? y : 0; int i; @@ -84,8 +84,7 @@ static u32 __attribute_const__ gf2_multiply(u32 x, u32 y, u32 modulus) * as appending len bytes of zero to the data), in time proportional * to log(len). */ -static u32 __attribute_const__ crc32_generic_shift(u32 crc, size_t len, - u32 polynomial) +static u32 crc32_generic_shift(u32 crc, size_t len, u32 polynomial) { u32 power = polynomial; /* CRC of x^32 */ int i; @@ -114,19 +113,19 @@ static u32 __attribute_const__ crc32_generic_shift(u32 crc, size_t len, return crc; } -u32 __attribute_const__ crc32_le_shift(u32 crc, size_t len) +u32 crc32_le_shift(u32 crc, size_t len) { return crc32_generic_shift(crc, len, CRC32_POLY_LE); } +EXPORT_SYMBOL(crc32_le_shift); -u32 __attribute_const__ __crc32c_le_shift(u32 crc, size_t len) +u32 crc32c_shift(u32 crc, size_t len) { return crc32_generic_shift(crc, len, CRC32C_POLY_LE); } -EXPORT_SYMBOL(crc32_le_shift); -EXPORT_SYMBOL(__crc32c_le_shift); +EXPORT_SYMBOL(crc32c_shift); -u32 __pure crc32_be_base(u32 crc, const u8 *p, size_t len) +u32 crc32_be_base(u32 crc, const u8 *p, size_t len) { while (len--) crc = (crc << 8) ^ crc32table_be[(crc >> 24) ^ *p++]; |