[PATCH 2/3] pm: Handle HID0_SLEEP in the TLF_NAPPING hack.
paulus at samba.org
Wed Sep 12 07:31:50 EST 2007
Scott Wood writes:
> The e300 core (and probably most other 6xx chips) can only come out of
> sleep mode with an interrupt. However, interrupts are logically disabled
> by the power management layer.
> This hack extends the existing doze/nap hack to also suppress the running
> of the interrupt handler when in sleep mode.
Having thought about this for a bit, I have come to the conclusion
that it would be a lot cleaner to use a new TLF_SLEEPING bit rather
than having to read HID0 to know whether we were napping or sleeping.
There are plenty of bits left in thread_info.local_flags; we've only
used 1 so far. :)
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