Merge tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...

[sfrench/cifs-2.6.git] / drivers / pci / controller / dwc / pcie-designware-ep.c

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index de8635af4cde296922ca4b0afd22bc86aee261d8..a543c45c722422371e5d61f53b7c6b4f84400635 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -503,6 +503,10 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
                dev_err(dev, "dbi_base/dbi_base2 is not populated\n");
                return -EINVAL;
        }
+       if (pci->iatu_unroll_enabled && !pci->atu_base) {
+               dev_err(dev, "atu_base is not populated\n");
+               return -EINVAL;
+       }
 
        ret = of_property_read_u32(np, "num-ib-windows", &ep->num_ib_windows);
        if (ret < 0) {