*unsigned long* ata_port::fastdrain_cnt (64-bit value in a 64-bit kernel)
is always assigned from the 32-bit *unsigned int* variables, thus could
also be made just *unsigned int*...
Signed-off-by: NSergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>