4d7691a538
host byte order (eventually the byte swapping could be wired in hardware, on
the 16 bit data bus). This was keept when wdc_exec_command() was created,
and as a result wdc_exec_command() is doing 16bit conversion to host byte
order. This is fine for IDENTIFY but doesn't work for other opaque data
structure, such as the ones for SMART.
So change wdc_exec_command() to do the conversion to host byte order only for
WDCC_IDENTIFY and ATAPI_IDENTIFY_DEVICE. This fixes atactl smart status
on big-endian hosts.
While here change __wdccommand_intr() to only use wdc_data{in,out}_pio, there
is no gain in doing the 32bit data port stuff locally.