ata_pio_queue_task — Queue port_task
The ata_port to queue port_task for
data for fn to use
delay time for workqueue function
Schedule fn(data) for execution after delay jiffies using port_task. There is one port_task per port and it's the user(low level driver)'s responsibility to make sure that only one task is active at any given time.
libata core layer takes care of synchronization between port_task and EH. ata_pio_queue_task may be ignored for EH synchronization.
Inherited from caller.