path: root/lib/crc16.c
diff options
authorStefan Roese <>2016-03-03 09:34:12 +0100
committerTom Rini <>2016-03-14 19:18:42 -0400
commitecb57f69b236a0c11a08cbe74d22be76fc72091a (patch)
treed3048dfc73116e1d4462d89b10b19766045bc387 /lib/crc16.c
parent7109157ff2467b4ba3f745af1a7bc2dc2cf61a39 (diff)
lib/crc16.c: Rename cyg_crc16() to crc16_ccitt() and add crc start value
The original name of this function is unclear. This patch renames this CRC16 function to crc16_ccitt() matching its name with its implementation. To make the usage of this function more flexible, lets add the CRC start value as parameter to this function. This way it can be used by other functions requiring different start values than 0 as well. Signed-off-by: Stefan Roese <> Reviewed-by: Tom Rini <>
Diffstat (limited to 'lib/crc16.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/crc16.c b/lib/crc16.c
index 57e46f82d9..753b987b02 100644
--- a/lib/crc16.c
+++ b/lib/crc16.c
@@ -61,12 +61,12 @@ static const uint16_t crc16_tab[] = {
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
-uint16_t cyg_crc16(unsigned char *buf, int len)
+uint16_t crc16_ccitt(uint16_t crc_start, unsigned char *buf, int len)
int i;
uint16_t cksum;
- cksum = 0;
+ cksum = crc_start;
for (i = 0; i < len; i++)
cksum = crc16_tab[((cksum>>8) ^ *buf++) & 0xff] ^ (cksum << 8);
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