From: Rafael J. Wysocki Date: Sun, 29 Dec 2013 14:25:35 +0000 (+0100) Subject: ACPI / hotplug: Add demand_offline hotplug profile flag X-Git-Tag: v3.14-rc1~107^2~11^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d22ddcbc4fb7a483d0721eddfda3f0558821d372;p=pandora-kernel.git ACPI / hotplug: Add demand_offline hotplug profile flag Add a new ACPI hotplug profile flag, demand_offline, such that if set for the given ACPI device object's scan handler, it will cause acpi_scan_hot_remove() to check if that device object's physical companions are offline upfront and fail the hot removal if that is not the case. That flag will be useful to overcome a problem with containers on some system where they can only be hot-removed after some cleanup operations carried out by user space, which needs to be notified of the container hot-removal before the kernel attempts to offline devices in the container. In those cases the current implementation of acpi_scan_hot_remove() is not sufficient, because it first tries to offline the devices in the container and only if that is suffcessful it tries to offline the container itself. As a result, the container hot-removal notification is not delivered to user space at the right time. Signed-off-by: Rafael J. Wysocki --- Reading git-diff-tree failed