I've tried; it wasn't accepted. The patch below should be more acceptable to the maintainer. Try it instead of the other one; it ought to get rid of all those error messages showing up in the log as well as fixing the mouse problem. That is, it won't prevent the actual errors from occurring at a rate of ~1 per minute -- it will just stop the driver from logging the messages. If it works well, I'll submit it.
OK, it works well for me since 8 days. I hope it will be included in one of the next kernel releases.
Willi