[media] lirc_zilog: Add ref counting of struct IR, IR_tx, and IR_rx
This is a major change to add pointer reference counting for struct IR, struct IR_tx, and struct IR_rx object instances. This ref counting gets lirc_zilog closer to gracefully handling bridge drivers and hot-unplugged USB devices disappearing out from under lirc_zilog when the /dev/lircN node is still open. (mutexes to protect the i2c_client pointers in struct IR_tx and struct IR_rx still need to be added.) This reference counting also helps lirc_zilog clean up properly when the i2c_clients disappear. Signed-off-by:Andy Walls <awalls@md.metrocast.net> Signed-off-by:
Jarod Wilson <jarod@redhat.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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