From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Mon, 3 Feb 2014 23:42:46 +0000 (+0100)
Subject: ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data()
X-Git-Tag: v3.15-rc1~151^2~14^2~3^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c2e17714e190b2ef857e7e842464fb47ceca146;p=pandora-kernel.git

ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data()

Introduce a new function, acpi_get_data_full(), working in analogy
with acpi_get_data() except that it can execute a callback provided
as its 4th argument right after acpi_ns_get_attached_data() has
returned a success.

That will allow Linux to reference count the object pointed to by
*data before the namespace mutex is released so as to ensure that it
will not be freed going forward until the reference to it acquired
by acpi_get_data_full() is dropped.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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