[PATCH v2 19/22] PCI: tegra: update PCI config space remap function
From: Lorenzo Pieralisi <hidden>
Date: 2017-03-27 10:02:02
Also in:
linux-pci, lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
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 <redacted> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Thierry Reding <redacted> --- drivers/pci/host/pci-tegra.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index ed8a93f..ec72c3a 100644
--- 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_nonposted(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_ioremap_nopost_resource(dev, &rp->regs); if (IS_ERR(rp->base)) return PTR_ERR(rp->base);
--
2.10.0