[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>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index 96f6a866afad..b2182c936305 100644
--- 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;