GEN4_LINK_CTRL_OFFSET
lnkctl = ioread16(ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
iowrite16(lnkctl, ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
lnkctl = ioread16(ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
iowrite16(lnkctl, ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
lnkctl = ioread16(ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
iowrite16(lnkctl, ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);