From: Alan Cox <redacted>
Date: Sun, 12 Jul 2009 23:48:54 +0100

quoted

The issue was, that the locking code in mkiss was assuming it was only
ever being called in process or bh context.  Fixed by converting the
involved locking code to use irq-safe locks.

Which historically of course was correct until the networking layer
changed behaviour some years ago.

Networking layer?  Surely you mean the TTY layer or USB because I
don't see anything networking in his traces :-)

These look good to me.

Thanks for reviewing, I'll apply his patch.