I patched a few files and put up a new release of the driver on sourceforge. I replaced add_timer with mod_timer and the cpu no longer seems to be getting eaten up. I commented out the logging of unhandled IOCTL messages as it was polluting message buffer.
** Attachment added: "et131x-1.2.3-2.tar.gz" http://launchpadlibrarian.net/12294976/et131x-1.2.3-2.tar.gz -- et131x causing ksoftirqd to eat up cpu https://bugs.launchpad.net/bugs/150515 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs