ACPI / hotplug: Use device offline/online for graceful hot-removal

[linux-imx.git] / Documentation / ABI / testing / sysfs-firmware-acpi

diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
index ce9bee98b43be62f84937502ed6fdfae38d43b3d..b4436cca97a83612fd3305630f5e0807eb53caeb 100644 (file)
--- a/Documentation/ABI/testing/sysfs-firmware-acpi
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -44,6 +44,16 @@ Description:
                or 0 (unset).  Attempts to write any other values to it will
                cause -EINVAL to be returned.
 
+What:          /sys/firmware/acpi/hotplug/force_remove
+Date:          May 2013
+Contact:       Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+               The number in this file (0 or 1) determines whether (1) or not
+               (0) the ACPI subsystem will allow devices to be hot-removed even
+               if they cannot be put offline gracefully (from the kernel's
+               viewpoint).  That number can be changed by writing a boolean
+               value to this file.
+
 What:          /sys/firmware/acpi/interrupts/
 Date:          February 2008
 Contact:       Len Brown <lenb@kernel.org>