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path: root/drivers/pci/controller/dwc/pcie-designware-ep.c
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Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware-ep.c')
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-ep.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 1e7b02221eac..880210366e71 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -504,6 +504,10 @@ 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) {