[coreboot] i82801gx: SMI from "GPE0_STS: USB1"

[Константин Аладышев]

>I assume the USB controller is still asserting its event. You'll need
>to clear USB1_EN in GPE0_EN. That should stop it. From what I can tell
>in the code GPE0_EN is only messed with when entering S5. So you may
>want to ensure that is cleared when setting up SMIs in coreboot.

>-Aaron


Ok, i can disable USB1_EN, and it helps. But i want to enable it before jump 
to OS waking vector, to be able to resume from USB keyboard again.
And once i enable it, coreboot starts these endless SMIs.
How can i stop USB controller from asserting this event?