[PATCH v2 20/22] PCI: layerscape: update PCI config space remap function

Lorenzo Pieralisi
2017-03-27T10:01:57Z

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 the devm_ioremap_nopost* interface to make sure the correct
memory mappings for PCI configuration space are used.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Mingkai Hu <mingkai.hu@freescale.com>
Cc: Minghuan Lian <minghuan.Lian@freescale.com>
Cc: Roy Zang <tie-fei.zang@freescale.com>
---
drivers/pci/dwc/pci-layerscape.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-layerscape.c
index c32e392..a1bd86a 100644
--- a/drivers/pci/dwc/pci-layerscape.c
+++ b/drivers/pci/dwc/pci-layerscape.c
@@ -283,7 +283,7 @@ static int __init ls_pcie_probe(struct platform_device *pdev)
pcie->pci = pci;

dbi_base = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
- pci->dbi_base = devm_ioremap_resource(dev, dbi_base);
+ pci->dbi_base = devm_ioremap_nopost_resource(dev, dbi_base);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);

--
2.10.0