Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Fri, 18 May 2018 10:58:20 +0200 | Subject | Re: [PATCH] PM / runtime: Fixup reference counting of device link suppliers at probe |
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On Fri, May 18, 2018 at 10:48 AM, Ulf Hansson <ulf.hansson@linaro.org> wrote: > In the driver core, before it invokes really_probe() it runtime resumes the > suppliers for the device via calling pm_runtime_get_suppliers(), which also > increases the runtime PM usage count for each of the available supplier. > > This makes sense, as to be able to allow the consumer device to be probed > by its driver. However, if the driver decides to add a new supplier link > during ->probe(), hence updating the list of suppliers,
Do any of the existing drivers do that?
> the following call to pm_runtime_put_suppliers(), invoked after really_probe() > in the driver core, we get into trouble.
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