PCI_PM_CAP_PME_MASK
rp->pme_support = FIELD_GET(PCI_PM_CAP_PME_MASK, pmc);
pmc &= PCI_PM_CAP_PME_MASK;
dev->pme_support = FIELD_GET(PCI_PM_CAP_PME_MASK, pmc);
*pmc &= ~cpu_to_le16(PCI_PM_CAP_PME_MASK);
p_setw(perm, PCI_PM_PMC, PCI_PM_CAP_PME_MASK, NO_WRITE);
*value = real_value & ~PCI_PM_CAP_PME_MASK;