[PATCH] libata: implement port_task

Implement port_task.  LLDD's can schedule a function to be executed
with context after specified delay.  libata core takes care of
synchronization against EH.  This is generalized form of pio_task and
packet_task which are tied to PIO hsm implementation.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index d822eba05f3c..f4c48c91b63d 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -45,6 +45,7 @@ extern int libata_fua;
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
                                       struct ata_device *dev);
 extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
+extern void ata_port_flush_task(struct ata_port *ap);
 extern void ata_qc_free(struct ata_queued_cmd *qc);
 extern unsigned int ata_qc_issue(struct ata_queued_cmd *qc);
 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);