Patch #2 fixes an issue in which del_timer_sync() and tasklet_kill() is invoked from the interrupt handler. This is probably a rare error case since it disables interrupts / the card in that case. Patch #1 converts a worker to use a threaded interrupt which is then also used in patch #2 instead adding another worker for this task (and flush_work() to synchronise vs rmmod).
This has been only compile tested. Sebastian
