Re: [PATCH 4/4] ACPI / PM: Expose lists of device power resources to user space

Rafael J. Wysocki
2013-01-23T00:11:49Z

On Wednesday, January 23, 2013 01:08:54 AM Rafael J. Wysocki wrote:
> On Tuesday, January 22, 2013 03:56:24 PM Greg Kroah-Hartman wrote:
> > On Tue, Jan 22, 2013 at 03:28:23AM +0100, Rafael J. Wysocki wrote:

[...]

> > Oh, and same question about racing userspace, you will have problems
> > here in that the symlinks will be showing up after the device is
> > created. Perhaps, to make the whole thing easier, you just change the
> > acpi core code to hold off on the notification until you get all of
> > these links and files set up and then tell userspace. That's probably
> > an easier fix.
>
> I suppose so.
>
> How can I do that?

Should I set dev->kobj.uevent_suppress before calling device_register() and
then clear it and call the kobject_uevent(&dev->kobj, KOBJ_ADD) from the ACPI
core after device_register() has returned and the files have been created?

Rafael

--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.