[PATCH] Calgary IOMMU: break out of pci_find_device_reverse if dev not found

Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index 96f6a866afad530d3054bc481e00c4b53521d683..b2182c936305c006eac9b717fb139b68521e4fd7 100644 (file)
--- a/arch/x86_64/kernel/pci-calgary.c
+++ b/arch/x86_64/kernel/pci-calgary.c
@@ -844,6 +844,8 @@ error:
                dev = pci_find_device_reverse(PCI_VENDOR_ID_IBM,
                                              PCI_DEVICE_ID_IBM_CALGARY,
                                              dev);
+               if (!dev)
+                       break;
                if (!translate_phb(dev)) {
                        pci_dev_put(dev);
                        continue;