ata_host_alloc_pinfo — alloc host and init with port_info array
| struct ata_host * ata_host_alloc_pinfo ( | struct device * dev, | 
| const struct ata_port_info *const * ppi, | |
| int n_ports ); | 
devgeneric device this host is associated with
ppiarray of ATA port_info to initialize host with
n_portsnumber of ATA ports attached to this host