Hello Christoph! The current cxd2099 driver is an old version. DD provides a newer variant. Please see my patch series http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg112410.html Especially this patch http://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg112409.html where I remove this useless printing already. I kept the "slot_shutdown" print in my series, because it is useful and called only if someone removes the CAM, but I removed all the other useless ones. So I can agree with your first hunk. It would be better to wait with this change after my series is approved! BR, Jasmin