tree 96983f44b13125ae789a1eaa5f6fa25b08b43c39
parent 761fdec21e378a09364411c11dff3343a77049b2
author Holger Freyther <zecke@selfish.org> 1244296475 +0000
committer Holger Freyther <zecke@selfish.org> 1244296475 +0000

lchan: Handle the abnormal case of channel getting closed

The abnormal case is that lchan_free ist getting called due
a RSL_MT_CHAN_REL_ACK in the RSL but the refcount of this
channel is not zero. This means that some "logical operation"
is still going on that needs to be cancelled.
Instead of always queuing up all operations in the
struct gsm_lchan use the signal framework to inform higher
layers about this abnormal case.

In gsm_04_08.c a signal handler is installed and in the
abnormal case the location updating request operation is
freed.