diff options
Diffstat (limited to 'lib/crc7.c')
| -rw-r--r-- | lib/crc7.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/lib/crc7.c b/lib/crc7.c index 3848e313b722..8dd991cc6114 100644 --- a/lib/crc7.c +++ b/lib/crc7.c @@ -7,14 +7,13 @@ #include <linux/module.h> #include <linux/crc7.h> - /* * Table for CRC-7 (polynomial x^7 + x^3 + 1). * This is a big-endian CRC (msbit is highest power of x), * aligned so the msbit of the byte is the x^6 coefficient * and the lsbit is not used. */ -const u8 crc7_be_syndrome_table[256] = { +static const u8 crc7_be_syndrome_table[256] = { 0x00, 0x12, 0x24, 0x36, 0x48, 0x5a, 0x6c, 0x7e, 0x90, 0x82, 0xb4, 0xa6, 0xd8, 0xca, 0xfc, 0xee, 0x32, 0x20, 0x16, 0x04, 0x7a, 0x68, 0x5e, 0x4c, @@ -48,7 +47,6 @@ const u8 crc7_be_syndrome_table[256] = { 0x1c, 0x0e, 0x38, 0x2a, 0x54, 0x46, 0x70, 0x62, 0x8c, 0x9e, 0xa8, 0xba, 0xc4, 0xd6, 0xe0, 0xf2 }; -EXPORT_SYMBOL(crc7_be_syndrome_table); /** * crc7_be - update the CRC7 for the data buffer @@ -65,7 +63,7 @@ EXPORT_SYMBOL(crc7_be_syndrome_table); u8 crc7_be(u8 crc, const u8 *buffer, size_t len) { while (len--) - crc = crc7_be_byte(crc, *buffer++); + crc = crc7_be_syndrome_table[crc ^ *buffer++]; return crc; } EXPORT_SYMBOL(crc7_be); |