On Mon, Jul 28, 2008 at 03:44:22PM +1200, Peter Mallett wrote:

Pidoux wrote:

quoted

Hi,

....

quoted

73 de Bernard, f6bvp

--- a/drivers/net/hamradio/hdlcdrv.c    2008-07-22 10:40:20.000000000 +0200
+++ b/drivers/net/hamradio/hdlcdrv.c    2008-07-22 10:42:13.000000000 +0200

@@ -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;
 }

....

Hi,

   The Baycom MoDem problem is one I have battled for quite a while here.

How do I apply this patch to my Ubuntu 2.6.20-17-generic kernel.

I have the linux-source-2.6.20-2.6.20 source so which file do I apply  
the patch too ?

Officially:

  patch -p1 < patch.text

Easier for you:

 - pick editor that you know how to use (nano, vi, emacs, joe, jove...)
 - edit file  drivers/net/hamradio/hdlcdrv.c
   - locate function  append_crc_ccitt
   - add missing line

Then I need to recompile it ?

Yes.

Better would be to rebuild your kernel runtime in distribution specific
way -- which I do not know for Ubuntu.

Would this bug also affect the SCC Baycom card ?

No.  It does HDLC framing in hardware.

Regards ..... Peter

73 de Matti, OH2MQK