int nvme_mi_mi_subsystem_health_status_poll (nvme_mi_ep_t ep , bool clear , struct nvme_mi_nvm_ss_health_status *nshds );
endpoint for MI communication
flag to clear the Composite Controller Status state
subsystem health status data to populate
Retrieves the Subsystem Health Data Structure into nshds. If clear is set, requests that the Composite Controller Status bits are cleared after the read. See NVMe-MI section 5.6 for details on the CCS bits.
See struct nvme_mi_nvm_ss_health_status.
The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise..