Re: Question on EHCI INTR_MASK

> #define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
>
> But I remember there are 6 bits, say, the frame list rollover bit,
>
> #define STS_FLR		(1<<3)		/* frame list rolled over */
>
> Why do we just ignore this one? All of these 6 bits are interrupt status bits.

We don't enable frame list rollover IRQs because they're useless in
our driver stack.  No point to enabling them.

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