Re: Allow runtime suspend during system resume

[Phillip Susi <psusi@ubuntu.com>]

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On 1/9/2014 11:08 AM, Alan Stern wrote:
> The code will be restructured as part of the asynchronous spin-up 
> change.  The resume routine would then look more like this:
> 
> bool test_spinning = !pm_runtime_in_use(dev);
> 
> pm_runtime_disable(dev); if (test_spinning) 
> pm_runtime_set_suspended(dev); else pm_runtime_set_active(dev); 
> pm_runtime_enable(dev);
> 
> start_async_spin_up(dev, test_spinning); return 0;
> 
> The asynchronous routine would skip the initial test if its second
>  argument is nonzero, and proceed directly to spin-up the disk.

It isn't enough to background the spin up; the TEST will block, so it
needs to be async as well.


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