[PATCH] Fix sleep on powerbook 3400

[Johannes Berg]

> Sleep on the powerbook 3400 has been broken since the change that made
> powerbook_sleep_3400 call pmac_suspend_devices(), which disables
> interrupts.  There are a couple of loops in powerbook_sleep_3400 that
> depend on interrupts being enabled, and in fact it has to have
> interrupts enabled at the point of going to sleep since it is an
> interrupt from the PMU that wakes it up.

Do you want me to rebase my patches on top of this?

johannes
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