PCI: cpqphp: Fix possible null pointer dereference

There is otherwise a risk of a null pointer dereference.

Found by cppcheck, a static code analysis program.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index 11845b7..f593585 100644 (file)
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -709,7 +709,8 @@ static struct pci_resource *get_max_resource(struct pci_resource **head, u32 siz
                                temp = temp->next;
                        }
 
-                       temp->next = max->next;
+                       if (temp)
+                               temp->next = max->next;
                }
 
                max->next = NULL;