From: Toshi Kani <toshi.kani@hp.com>
Date: Fri, 26 Oct 2012 11:38:57 +0000 (+0200)
Subject: ACPI: Fix stale pointer access to flags.lockable
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~88^2~13^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3c450c38075f414077e58439cff6bdce9e47df8;p=pandora-kernel.git

ACPI: Fix stale pointer access to flags.lockable

During hot-remove, acpi_bus_hot_remove_device() calls ACPI _LCK
method when device->flags.lockable is set. However, this device
pointer is stale since the target acpi_device object has been
already kfree'd by acpi_bus_trim().

The flags.lockable indicates whether or not this ACPI object
implements _LCK method. Fix the stable pointer access by replacing
it with acpi_get_handle() to check if _LCK is implemented.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

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