SRU reguest for lp#254783

[Stefan Bader]

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Ben Collins wrote:
> On Mon, 2008-08-04 at 18:13 -0400, Stefan Bader wrote:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/254783
> 
> Note: the patch is mostly a cherry-pick but needed one function moved around.
> 
> SRU justification:
> 
> Impact: The USB-PERSIST feature (0458d5b4c9cc4ca0f62625d0144ddc4b4bc97a3c) lets
> USB mounted filesystems remain intact (the USB device not removed) during power
> loss. This is important for small machines that have their root fs on a USB
> device. However this did not work in all cases.
> 
> Fix: A patch (5e6effaed6da94e727cd45f945ad2489af8570b3) that followed later
> fixed the persist problem to work on all sleep states instead of supporting
> only those where the hub lost power.
> 
> Testcase: Suspend fails on the classmate PC without this patch.
> 
>> Instead of moving the function, can we just get a forward declaration?
>> Will make it easier to see how much is really changing in this diff.
> 
>> Thanks
> 

Tried to keep close to upstream, which moved the function (but not with the
same commit). But I changed that to a forward declaration.

Applicable: Hardy only

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