From: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Date: Thu, 22 Dec 2011 10:19:13 +0000 (+0000)
Subject: powerpc/mpic: Add "last-interrupt-source" property to override hardware
X-Git-Tag: v3.4-rc1~159^2~66
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1b8d45db4dbc64cc6015f97922f767fdf782f64;p=pandora-kernel.git

powerpc/mpic: Add "last-interrupt-source" property to override hardware

The FreeScale PowerQUICC-III-compatible (mpc85xx/mpc86xx) MPICs do not
correctly report the number of hardware interrupt sources, so software
needs to override the detected value with "256".

To avoid needing to write custom board-specific code to detect that
scenario, allow it to be easily overridden in the device-tree.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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