From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: [PATCH 0/2] ACPI / scan: Two fixes for device hot-removal
Date: Sat, 09 Feb 2013 15:26 +0100
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Cc: Bjorn Helgaas <bhelgaas@google.com>, Mika Westerberg <mika.westerberg@linux.intel.com>, Yinghai Lu <yinghai@kernel.org>, Jiang Liu <liuj97@gmail.com>, Toshi Kani <toshi.kani@hp.com>, LKML <linux-kernel@vger.kernel.org>, Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>

Hi,

The following two patches fix issues I've found revently in the ACPI device
hot-removal code.

Patch [1/2] makes acpi_bus_hot_remove_device() hold acpi_scan_lock around the
whole removal procedure to prevent potential race condition between
acpi_bus_scan() and a conflicting evaluation of _EJ0 from happening.

Patch [2/2] makes acpi_device_unregister() put devices (supporting that) into
D3cold to prevent potential problems with removing power from them without
preparation from happening and removes the totally wrong evaluation of _PS3
from acpi_bus_hot_remove_device().

Thanks,
Rafael


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