PCI: Fix NULL pointer dereference in of_pci_bus_find_domain_nr()
If the "parent" pointer passed to of_pci_bus_find_domain_nr() is NULL,
don't dereference it.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f6a4dd10..b7ff578 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5611,8 +5611,9 @@ static int of_pci_bus_find_domain_nr(struct device *parent)
use_dt_domains = 0;
domain = pci_get_new_domain_nr();
} else {
- dev_err(parent, "Node %pOF has inconsistent \"linux,pci-domain\" property in DT\n",
- parent->of_node);
+ if (parent)
+ pr_err("Node %pOF has ", parent->of_node);
+ pr_err("Inconsistent \"linux,pci-domain\" property in DT\n");
domain = -1;
}