umcs (4-Port-USB-serial) triggering way too much ehci IRQs
lev at FreeBSD.org
Tue Sep 17 08:41:26 UTC 2013
You wrote 17 сентября 2013 г., 9:14:17:
HPS> Check using usbdump -i usbusX -f Y -s 65536 -vvv
HPS> what is going on. Maybe some USB transfers are returning zero length data from the chip.
After closing port I disable all interrupts in chip, I've checked this (it
was my first thought: ``I forget to disable internal interrupts on device
close''), so, theoretically, it should stop spam system with interrupts...
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
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