From f66e5b290796aeb6c5e027506175c87978f2722a Mon Sep 17 00:00:00 2001
From: Bjorn Helgaas <bhelgaas@google.com>
Date: Thu, 6 Oct 2016 13:36:07 -0500
Subject: PCI: iproc: Validate CSR base in BCMA setup code

Validate iproc_pcie->base for BCMA devices just like we already do for
platform devices in iproc_pcie_pltfm_probe().  No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/host/pcie-iproc-bcma.c
index ec6edaf..8ce0890 100644
--- a/drivers/pci/host/pcie-iproc-bcma.c
+++ b/drivers/pci/host/pcie-iproc-bcma.c
@@ -55,6 +55,11 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
 	pcie->dev = dev;
 
 	pcie->base = bdev->io_addr;
+	if (!pcie->base) {
+		dev_err(dev, "no controller registers\n");
+		return -ENOMEM;
+	}
+
 	pcie->base_addr = bdev->addr;
 
 	res_mem.start = bdev->addr_s[0];
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c
index c41d6bd..12a5156 100644
--- a/drivers/pci/host/pcie-iproc.c
+++ b/drivers/pci/host/pcie-iproc.c
@@ -462,7 +462,7 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
 	void *sysdata;
 	struct pci_bus *bus;
 
-	if (!pcie || !pcie->dev || !pcie->base)
+	if (!pcie || !pcie->dev)
 		return -EINVAL;
 
 	dev = pcie->dev;
-- 
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