[Bug 653388] Re: 10.10 RC: serial8250: too much work for irq (Motorola SM56 modem, RS480, SB400)

[floid]

Confirmed behavior:  
On the machine that was warm-booted into i386 10.10 RC and back to 9.10, 9.10 with i386 2.6.31-22-generic #65-Ubuntu SMP does generate the noise from timestamps ~ 20 to 67 at boot.  I haven't bothered checking to make sure it goes away from a cold boot - it's hardly a big deal - but does imply the 10.10 RC 'nudged' the hardware into a state to trigger it.

On an identical machine running 9.10 with the same i386
2.6.31-22-generic #65-Ubuntu SMP, I do have history back to boot-time
and there's no such complaint.

Obviously warnings that *never stop* are annoying, but that was only
observed the once.

-- 
10.10 RC: serial8250: too much work for irq (Motorola SM56 modem, RS480, SB400)
https://bugs.launchpad.net/bugs/653388
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