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authorMicah Dowty <micah@navi.cx>2008-07-21 09:59:09 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-21 10:10:56 -0700
commitae6134bdf3197206fba95563d755d2fa50d90ddd (patch)
tree0d161e5c7fdcef4a3b924be0a6fd1eaec2a81b50 /drivers/net/hamradio
parentd3678b463df73f5060d7420915080e19baeb379b (diff)
downloadlinux-ae6134bdf3197206fba95563d755d2fa50d90ddd.tar.bz2
hdlcdrv: Fix CRC calculation.
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. Signed-off-by: Micah Dowty <micah@navi.cx> Acked-by: Thomas Sailer <t.sailer@alumni.ethz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hamradio')
-rw-r--r--drivers/net/hamradio/hdlcdrv.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index ae9629fa6882..c258a0586e61 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -88,6 +88,7 @@
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;
}