From: Zhang Rui <rui.zhang@intel.com>
Date: Thu, 27 Feb 2014 03:37:15 +0000 (+0800)
Subject: ACPI / resources: ignore invalid ACPI device resources
X-Git-Tag: v3.14-rc6~15^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b355cee88e3b1a193f0e9a81db810f6f83ad728b;p=pandora-kernel.git

ACPI / resources: ignore invalid ACPI device resources

ACPI table may export resource entry with 0 length.
But the current code interprets this kind of resource in a wrong way.
It will create a resource structure with
res->end = acpi_resource->start + acpi_resource->len - 1;

This patch fixes a problem on my machine that a platform device fails
to be created because one of its ACPI IO resource entry (start = 0,
end = 0, length = 0) is translated into a generic resource with
start = 0, end = 0xffffffff.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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