I found workaround:
I change (my) scritp /etc/udev/rules.d/55-irda-stir4200.rules to:
#!/bin/sh
killall irattach # kill irattach first and wait sleep 1 rmmod stir4200 sleep 1 rmmod ircomm_tty
now plug/unplug IRDA dongle don't crash USB subsystem.
I found workaround:
I change (my) scritp /etc/udev/ rules.d/ 55-irda- stir4200. rules to:
#!/bin/sh
killall irattach # kill irattach first and wait
sleep 1
rmmod stir4200
sleep 1
rmmod ircomm_tty
now plug/unplug IRDA dongle don't crash USB subsystem.