From 683058e315f00a216fd6c79df4f63bc9945ca434 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 3 May 2013 00:26:16 +0200 Subject: ACPI / hotplug: Use device offline/online for graceful hot-removal Modify the generic ACPI hotplug code to be able to check if devices scheduled for hot-removal may be gracefully removed from the system using the device offline/online mechanism introduced previously. Namely, make acpi_scan_hot_remove() handling device hot-removal call device_offline() for all physical companions of the ACPI device nodes involved in the operation and check the results. If any of the device_offline() calls fails, the function will not progress to the removal phase (which cannot be aborted), unless its (new) force argument is set (in case of a failing offline it will put the devices offlined by it back online). In support of 'forced' device hot-removal, add a new sysfs attribute 'force_remove' that will reside under /sys/firmware/acpi/hotplug/. Signed-off-by: Rafael J. Wysocki Reviewed-by: Toshi Kani --- include/acpi/acpi_bus.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/acpi') diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 98db31d9f9b4..4d5d3e7ba33d 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -286,6 +286,7 @@ struct acpi_device_physical_node { u8 node_id; struct list_head node; struct device *dev; + bool put_online:1; }; /* set maximum of physical nodes to 32 for expansibility */ -- cgit v1.2.1