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powerpc/powernv: Reset root port in firmware 

Resetting root port has more stuff to do than that for PCIe switch
ports and we should have resetting root port done in firmware instead
of the kernel itself. The problem was introduced by commit 5b2e198e
("powerpc/powernv: Rework EEH reset").

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Gavin Shan 2014-04-24 18:00:22 +10:00 committed by Benjamin Herrenschmidt
parent e4565362c7
commit 372cf1244d
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/platforms/powernv/eeh-ioda.c
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@ -549,7 +549,8 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option)
ret = ioda_eeh_phb_reset(hose, option);
} else {
bus = eeh_pe_bus_get(pe);
if (pci_is_root_bus(bus))
if (pci_is_root_bus(bus) ||
pci_is_root_bus(bus->parent))
ret = ioda_eeh_root_reset(hose, option);
else
ret = ioda_eeh_bridge_reset(hose, bus->self, option);