niu: Use PCI Express Capability accessors
Use PCI Express Capability access functions to simplify niu driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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1 changed files with 7 additions and 12 deletions
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@ -9762,9 +9762,8 @@ static int __devinit niu_pci_init_one(struct pci_dev *pdev,
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union niu_parent_id parent_id;
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struct net_device *dev;
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struct niu *np;
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int err, pos;
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int err;
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u64 dma_mask;
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u16 val16;
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niu_driver_version();
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@ -9787,8 +9786,7 @@ static int __devinit niu_pci_init_one(struct pci_dev *pdev,
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goto err_out_disable_pdev;
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}
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pos = pci_pcie_cap(pdev);
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if (pos <= 0) {
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if (!pci_is_pcie(pdev)) {
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dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
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goto err_out_free_res;
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}
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@ -9813,14 +9811,11 @@ static int __devinit niu_pci_init_one(struct pci_dev *pdev,
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goto err_out_free_dev;
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}
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pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
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val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
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val16 |= (PCI_EXP_DEVCTL_CERE |
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PCI_EXP_DEVCTL_NFERE |
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PCI_EXP_DEVCTL_FERE |
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PCI_EXP_DEVCTL_URRE |
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PCI_EXP_DEVCTL_RELAX_EN);
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pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
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pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
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PCI_EXP_DEVCTL_NOSNOOP_EN,
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PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE |
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PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE |
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PCI_EXP_DEVCTL_RELAX_EN);
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dma_mask = DMA_BIT_MASK(44);
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err = pci_set_dma_mask(pdev, dma_mask);
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