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2008 Jun 03
2
Interrupt storm with shared interrupt on digi(4)
I have an on-going problem with DigiBoard Xem boards causing interrupt storms (since 4.x days). The FreeBSD driver polls the board and doesn't have a functional interrupt handler (and Linux behaves in the same way). It seems that under some conditions, the board will assert its interrupt line and, since there's no interrupt handler to clear whatever triggered the interrupt, the IRQ is