From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Thu, 7 Nov 2013 00:41:27 +0000 (+0100)
Subject: ACPI / hotplug: Fix handle_root_bridge_removal()
X-Git-Tag: v3.13-rc1~96^2~1^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2441191a19039002b2c454a261fb45986df15184;p=pandora-kernel.git

ACPI / hotplug: Fix handle_root_bridge_removal()

It is required to do get_device() on the struct acpi_device in
question before passing it to acpi_bus_hot_remove_device() through
acpi_os_hotplug_execute(), because acpi_bus_hot_remove_device()
calls acpi_scan_hot_remove() that does put_device() on that
object.

The ACPI PCI root removal routine, handle_root_bridge_removal(),
doesn't do that, which may lead to premature freeing of the
device object or to executing put_device() on an object that
has been freed already.

Fix this problem by making handle_root_bridge_removal() use
get_device() as appropriate.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Cc: All applicable <stable@vger.kernel.org>
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