Fix for hdlcdrv (ham radio) CRC calculation

Hello,

This is a trivial patch against the hdlcdrv module that fixes its CRC calculation. The finished CRC was overwriting the first two bytes of each packet rather than being appended to the end.

I've tested this with 2.6.8 and 2.6.10-rc1, but hdlcdrv hasn't changed much recently so it should work with many other kernel versions.

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@@ -106,6 +106,7 @@ static char ax25_nocall[AX25_ADDR_LEN] =
 static inline void append_crc_ccitt(unsigned char *buffer, int len)
 {
        unsigned int crc = crc_ccitt(0xffff, buffer, len) ^ 0xffff;
+       buffer += len;
        *buffer++ = crc;
        *buffer++ = crc >> 8;
 }

--Micah

Only you can prevent creeping featurism!