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

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commit ea461abf61 upstream.

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.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Cc: Steve Best <sbest@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gavin Shan 2013-06-05 15:34:02 +08:00 committed by Greg Kroah-Hartman
parent 56bd6ad3d8
commit ba94200678
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) {
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);
pdev = eeh_dev_to_pci_dev(edev);
if (pdev)