Thread (5 messages) 5 messages, 4 authors, 2014-11-01
DORMANTno replies

[PATCH v3 4/9] drivercore / platform: Keep PM domain powered during ->probe()

From: Rafael J. Wysocki <hidden>
Date: 2014-11-01 00:21:28
Also in: linux-pm, linux-samsung-soc

On Friday, October 31, 2014 10:23:00 AM Ulf Hansson wrote:
On 31 October 2014 01:07, Dmitry Torokhov [off-list ref] wrote:
quoted
On Thu, Oct 30, 2014 at 01:47:27PM -0700, Kevin Hilman wrote:
quoted
Ulf Hansson [off-list ref] writes:
quoted
To sucessfully probe some devices their corresponding PM domains may
need to be powered.
Isn't that what pm_runtime_get*() is supposed to be doing?  Why isn't
that working?
Also, I do not understand why we placing device into a power domain only
when we probe it. Why if I unbind device from its driver (or do not have
a driver for it) it disappears from its power domain? To me power domain
and having driver bound to a device are 2 orthogonal concepts.
That's a different discussion, I don't think we want to go there
within this context.
Why don't we, exactly?

Rafael
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