PCI: tegra: Update PCI config space remap function

PCI configuration space should be mapped with a memory region type that
generates on the CPU host bus non-posted write transations. Update the
driver to use correct memory mapping attributes to map config space
regions to enforce configuration space non-posted writes behaviour.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index ed8a93f2bfb5fd4167f7362cddbc6eabe6dd85c8..2618f875a600d63aea25aebbee2a145587d540f9 100644 (file)
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/host/pci-tegra.c
@@ -380,7 +380,7 @@ static struct tegra_pcie_bus *tegra_pcie_bus_alloc(struct tegra_pcie *pcie,
                                                   unsigned int busnr)
 {
        struct device *dev = pcie->dev;
-       pgprot_t prot = pgprot_device(PAGE_KERNEL);
+       pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
        phys_addr_t cs = pcie->cs->start;
        struct tegra_pcie_bus *bus;
        unsigned int i;
@@ -1962,7 +1962,7 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie)
                rp->pcie = pcie;
                rp->np = port;
 
-               rp->base = devm_ioremap_resource(dev, &rp->regs);
+               rp->base = devm_pci_remap_cfg_resource(dev, &rp->regs);
                if (IS_ERR(rp->base))
                        return PTR_ERR(rp->base);