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ARM: PCI: Use PCI Express Capability accessors

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Use PCI Express Capability access functions to simplify ARM PCIe code.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
This commit is contained in:
Jiang Liu 2012-07-24 17:20:13 +08:00 committed by Bjorn Helgaas
parent f12eb72a26
commit 3b87011d9a
1 changed files with 1 additions and 11 deletions
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12
arch/arm/mach-tegra/pcie.c
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@ -367,17 +367,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, tegra_pcie_fixup_class);
/* Tegra PCIE requires relaxed ordering */
static void __devinit tegra_pcie_relax_enable(struct pci_dev *dev)
{
u16 val16;
int pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (pos <= 0) {
dev_err(&dev->dev, "skipping relaxed ordering fixup\n");
return;
}
pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &val16);
val16 |= PCI_EXP_DEVCTL_RELAX_EN;
pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, val16);
pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
}
DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, tegra_pcie_relax_enable);