powerpc/eeh: Fix fetching bus for single-dev-PE
authorGavin Shan <shangw@linux.vnet.ibm.com>
Wed, 5 Jun 2013 07:34:02 +0000 (15:34 +0800)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Sun, 30 Jun 2013 04:08:34 +0000 (14:08 +1000)
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>
arch/powerpc/platforms/pseries/eeh_pe.c

index fe43d1a..9d4a9e8 100644 (file)
@@ -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)