Boot hang regression 3.10.0-rc4 -> 3.10.0

[Felipe Balbi]

Hi,

On Wed, Jul 10, 2013 at 07:07:04PM +0300, Felipe Balbi wrote:
> how about something like below ? It makes omap_device/hwmod and
> pm_runtime agree on the initial state of the device and will prevent
> ->runtime_resume() from being called on first pm_runtime_get*() done
> during probe.
> 
> This is similar to what PCI bus does (if you look at pci_pm_init()).
> 
> commit 59108a500b4ab4b1a5102648a3360276dbf7df6f
> Author: Felipe Balbi <balbi at ti.com>
> Date:   Wed Jul 10 18:50:16 2013 +0300
> 
>     arm: omap2plus: unidle devices which are about to probe
>     
>     in order to make HWMOD and pm_runtime agree on the
>     initial state of the device, we will unidle the device
>     and call pm_runtime_set_active() to tell pm_runtime
>     that the device is really active.
>     
>     By the time driver's probe() is reached, a call to
>     pm_runtime_get_sync() will not cause driver's
>     ->runtime_resume() method to be called at first, only
>     after a successful ->runtime_suspend().
>     
>     Signed-off-by: Felipe Balbi <balbi at ti.com>

btw, this is RFC, haven't tested at all.

-- 
balbi
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