linux-kernel - [PATCH v2 12/22] PCI: rockchip: update PCI config space remap function

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Message-Id: <20170327094954.7162-13-lorenzo.pieralisi@arm.com>
Date:   Mon, 27 Mar 2017 10:49:40 +0100
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     linux-pci@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Wenrui Li <wenrui.li@...k-chips.com>,
        Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH v2 12/22] PCI: rockchip: 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 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@....com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Wenrui Li <wenrui.li@...k-chips.com>
Cc: Shawn Lin <shawn.lin@...k-chips.com>
---
 drivers/pci/host/pcie-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 26ddd35..a078131 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -822,7 +822,7 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
 	regs = platform_get_resource_byname(pdev,
 					    IORESOURCE_MEM,
 					    "axi-base");
-	rockchip->reg_base = devm_ioremap_resource(dev, regs);
+	rockchip->reg_base = devm_ioremap_nopost_resource(dev, regs);
 	if (IS_ERR(rockchip->reg_base))
 		return PTR_ERR(rockchip->reg_base);
 
-- 
2.10.0