Hi, I am playing a bit with getting MythTV to talk high level CI. However, I have come to a problem in the dst/dst_ca drivers. MythTV have different threads running for tuning frequency and doing ca-stuff. This makes me get simultaneous frontend and ca calls device. However, in the dst driver these two things both end up in i2c communiation with the card which interfere with each other. As you can understand this does not work good since there are no locking mechanism in dst. Is this something that is to go into the driver or something that should be done on a higher level (e.g. between all components in an dvb-adapter)? I guess it should be taken care of by the driver, since it is the only one that knows when locking is needed, but I just want to check. Regards, Henrik