tree 722fdbf7ec1406f437f5f4bb2c7073c4fb629642
parent d4e58e5928f8c6c49228451dd03e0714cbab299a
author Gavin Shan <gwshan@linux.vnet.ibm.com> 1402475204 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1402477943 +1000

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>