From: Gavin Shan <gwshan@linux.vnet.ibm.com>
Date: Wed, 11 Jun 2014 08:26:44 +0000 (+1000)
Subject: powerpc/eeh: Dump PE location code
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~30^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=357b2f3dd9b7e220ddbaef5bcc108f0359dc0fcf;p=pandora-kernel.git

powerpc/eeh: Dump PE location code

As Ben suggested, it's meaningful to dump PE's location code
for site engineers when hitting EEH errors. The patch introduces
function eeh_pe_loc_get() to retireve the location code from
dev-tree so that we can output it when hitting EEH errors.

If primary PE bus is root bus, the PHB's dev-node would be tried
prior to root port's dev-node. Otherwise, the upstream bridge's
dev-node of the primary PE bus will be check for the location code
directly.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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