Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH 4/4] ACPI / PM: Expose lists of device power resources to user space | Date | Wed, 23 Jan 2013 01:28:40 +0100 |
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On Wednesday, January 23, 2013 01:17:47 AM Rafael J. Wysocki wrote: > 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?
I suppose along the lines of how firmware_class.c uses uevent_suppress?
Is there any safe mechanism for adding/removing sysfs attributes after kobject_uevent(&dev->kobj, KOBJ_ADD) has been called for the given device?
Rafael
-- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.
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