Re: [PATCH v11 2/4] PM / Domains: add setter for dev.pm_domain

[Tomeu Vizoso]

On 10 November 2015 at 10:33, Daniel Kurtz <djkurtz@xxxxxxxxxxxx> wrote:
[snip]
>
> The problem appears to be that:
>   * On boot, platform_drv_probe() calls dev_pm_domain_attach() before
> drv->probe(); thus, it calls dev_pm_domain_attach() while the device
> is unbound.
>
>  * However, for a platform_device, the reboot path calls
> device_shutdown(), but not __device_release_driver():
> device_shutdown()
>   dev->driver->shutdown => platform_drv_shutdown()
>     dev_pm_domain_detach()
>        dev->pm_domain->detach() => genpd_dev_pm_detach()
>          pm_genpd_remove_device()
>             dev_pm_domain_set(dev, NULL);
>
> So, for a platform_device in a genpd power domain with .shutdown
> installed, platform_drv_shutdown() calls dev_pm_domain_detach() while
> the device is still bound, which triggers the WARN().

Hi Rafael, Alan and Ulf,

do you have any suggestion about this? I don't really understand why
the device is detached from the domain on shutdown.

Thanks,

Tomeu

> Thanks,
> -Dan
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