pci_p2pdma_state
switch (pci_p2pdma_state(&iter->p2pdma, dma_dev,
switch (pci_p2pdma_state(&p2pdma_state, dev, sg_page(s))) {
switch (pci_p2pdma_state(&p2pdma_state, dev, sg_page(sg))) {
switch (pci_p2pdma_state(p2pdma_state, dev, page)) {