[PATCH v2 18/22] PCI: xgene: update PCI config space remap function
From: Lorenzo Pieralisi <hidden>
Date: 2017-03-27 10:02:13
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 the devm_ioremap_nopost* interface to make sure the correct memory mappings for PCI configuration space are used. Signed-off-by: Lorenzo Pieralisi <redacted> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Tanmay Inamdar <redacted> --- drivers/pci/host/pci-xgene.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 1a61087..df8e13c 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c@@ -248,7 +248,7 @@ static int xgene_pcie_ecam_init(struct pci_config_window *cfg, u32 ipversion) dev_err(dev, "can't get CSR resource\n"); return ret; } - port->csr_base = devm_ioremap_resource(dev, &csr); + port->csr_base = devm_ioremap_nopost_resource(dev, &csr); if (IS_ERR(port->csr_base)) return PTR_ERR(port->csr_base);
@@ -359,7 +359,7 @@ static int xgene_pcie_map_reg(struct xgene_pcie_port *port, struct resource *res; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "csr"); - port->csr_base = devm_ioremap_resource(dev, res); + port->csr_base = devm_ioremap_nopost_resource(dev, res); if (IS_ERR(port->csr_base)) return PTR_ERR(port->csr_base);
--
2.10.0