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-rw-r--r--common/xyzModem.c2
-rw-r--r--drivers/mmc/mmc_spi.c4
-rw-r--r--include/crc.h4
-rw-r--r--lib/crc16.c4
4 files changed, 7 insertions, 7 deletions
diff --git a/common/xyzModem.c b/common/xyzModem.c
index 56f4bca..5656aac 100644
--- a/common/xyzModem.c
+++ b/common/xyzModem.c
@@ -446,7 +446,7 @@ xyzModem_get_hdr (void)
/* Verify checksum/CRC */
if (xyz.crc_mode)
{
- cksum = cyg_crc16 (xyz.pkt, xyz.len);
+ cksum = crc16_ccitt(0, xyz.pkt, xyz.len);
if (cksum != ((xyz.crc1 << 8) | xyz.crc2))
{
ZM_DEBUG (zm_dprintf ("CRC error - recvd: %02x%02x, computed: %x\n",
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c
index 9032a73..7547e1a 100644
--- a/drivers/mmc/mmc_spi.c
+++ b/drivers/mmc/mmc_spi.c
@@ -91,7 +91,7 @@ static uint mmc_spi_readdata(struct mmc *mmc, void *xbuf,
spi_xfer(spi, bsize * 8, NULL, buf, 0);
spi_xfer(spi, 2 * 8, NULL, &crc, 0);
#ifdef CONFIG_MMC_SPI_CRC_ON
- if (be_to_cpu16(cyg_crc16(buf, bsize)) != crc) {
+ if (be_to_cpu16(crc16_ccitt(0, buf, bsize)) != crc) {
debug("%s: CRC error\n", mmc->cfg->name);
r1 = R1_SPI_COM_CRC;
break;
@@ -120,7 +120,7 @@ static uint mmc_spi_writedata(struct mmc *mmc, const void *xbuf,
tok[1] = multi ? SPI_TOKEN_MULTI_WRITE : SPI_TOKEN_SINGLE;
while (bcnt--) {
#ifdef CONFIG_MMC_SPI_CRC_ON
- crc = cpu_to_be16(cyg_crc16((u8 *)buf, bsize));
+ crc = cpu_to_be16(crc16_ccitt(0, (u8 *)buf, bsize));
#endif
spi_xfer(spi, 2 * 8, tok, NULL, 0);
spi_xfer(spi, bsize * 8, buf, NULL, 0);
diff --git a/include/crc.h b/include/crc.h
index 5085d4e..b0031b2 100644
--- a/include/crc.h
+++ b/include/crc.h
@@ -62,8 +62,8 @@ cyg_ether_crc32(unsigned char *s, int len);
extern uint32_t
cyg_ether_crc32_accumulate(uint32_t crc, unsigned char *s, int len);
-/* 16 bit CRC with polynomial x^16+x^12+x^5+1 */
+/* 16 bit CRC with polynomial x^16+x^12+x^5+1 (CRC-CCITT) */
-extern uint16_t cyg_crc16(unsigned char *s, int len);
+uint16_t crc16_ccitt(uint16_t crc_start, unsigned char *s, int len);
#endif /* _SERVICES_CRC_CRC_H_ */
diff --git a/lib/crc16.c b/lib/crc16.c
index 57e46f8..753b987 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);