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powerpc/eeh: Fix fetching bus for single-dev-PE

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While running Linux as guest on top of phyp, we possiblly have
PE that includes single PCI device. However, we didn't return
its PCI bus correctly and it leads to failure on recovery from
EEH errors for single-dev-PE. The patch fixes the issue.

Cc: <stable@vger.kernel.org> # v3.7+
Cc: Steve Best <sbest@us.ibm.com>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2013-06-05 15:34:02 +08:00 committed by Benjamin Herrenschmidt
parent 6c355beafd
commit ea461abf61
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/platforms/pseries/eeh_pe.c
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@ -639,7 +639,8 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe)
if (pe->type & EEH_PE_PHB) { if (pe->type & EEH_PE_PHB) {
bus = pe->phb->bus; bus = pe->phb->bus;
} else if (pe->type & EEH_PE_BUS) { } else if (pe->type & EEH_PE_BUS ||
pe->type & EEH_PE_DEVICE) {
edev = list_first_entry(&pe->edevs, struct eeh_dev, list); edev = list_first_entry(&pe->edevs, struct eeh_dev, list);
pdev = eeh_dev_to_pci_dev(edev); pdev = eeh_dev_to_pci_dev(edev);
if (pdev) if (pdev)