Comment 79 for bug 1931001

(In reply to Andy Shevchenko from comment #59)
> (In reply to Jarkko Nikula from comment #58)
> > 2nd version of patch disabling SMB_ALERT signal
>
> Side remark: Looking into this code, shouldn't you first clean current
> notifications and only after that enable IRQ?

That's a good question and made me debugging more. In fact disabling doesn't disable detection and SMBALERT_STS will be set and cause short burst of interrupts during driver load and unload time if SMB_ALERT signal was asserted. Looks like it's better to add basic acknowledging for it into i801_isr().

I'm not sure would clearing pending interrupts at the probe time cause any regression but acknowledging the SMBALERT_STS in i801_isr() makes sure the status doesn't stay forever if it occurs after probe.