[PATCH] Release lchan directly when refcount drops to zero

Hi all, I have written this small patch yesterday. It is removing the "auto release" after timeout from lchan and will directly release the channel ones the ref count drops to zero. This means that any use of the lchan after a put_lchan is illegal (the code using a timeout used to workaround this issue). I have changed three call sites to follow this convention, I have added a BUG_ON into the abis_rsl method. From a quick test (Location Updating Request and a call) the BUG_ON in the abis_rsl.c is hit by: - The lchan release code (okay... a false warning and avoided by increasing use_count and decreasing it...) - CM Service Request Ack and such is sent without anyone holding a reference to it. I think this warning is safe to ignore for now as no one has simply claimed the channel. I plan to fix this in January/February when moving our MSC code over to the On Waves BSC abstraction. The benefit of this change is that we free our channels a lot earlier. I think this change would be beneficial for the 26C3 and I would like to hear opinions and see some testing with it. regards z.