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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>
This commit is contained in:
Lorenzo Pieralisi 2017-04-19 17:49:06 +01:00 committed by Bjorn Helgaas
parent 26b758f775
commit 3e02dc439b
1 changed files with 2 additions and 2 deletions
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4
drivers/pci/host/pci-tegra.c
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@ -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);