AHCI_EM_PRESENT
ahci_ctlp->ahcictl_em_flags |= AHCI_EM_PRESENT | AHCI_EM_RESETTING;
if ((ahci_ctlp->ahcictl_em_flags & AHCI_EM_PRESENT) == 0) {
if ((ahci_ctlp->ahcictl_em_flags & AHCI_EM_PRESENT) == 0) {
if ((ahci_ctlp->ahcictl_em_flags & AHCI_EM_PRESENT) == 0) {
if ((ahci_ctlp->ahcictl_em_flags & AHCI_EM_PRESENT) == 0) {
if ((ahci_ctlp->ahcictl_em_flags & AHCI_EM_PRESENT) == 0) {
#define AHCI_EM_USABLE (AHCI_EM_PRESENT | AHCI_EM_READY)