libata: Remove excess delay in the tf_load path

We don't need to stall and wait after loading the task file and before
issuing a command, so don't do it. This shows up on profiles and is not
needed.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-sff.c

@@ -604,7 +604,6 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 		if (ioaddr->ctl_addr)
 			iowrite8(tf->ctl, ioaddr->ctl_addr);
 		ap->last_ctl = tf->ctl;
-		ata_wait_idle(ap);
 	}
 
 	if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
@@ -640,8 +639,6 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 		iowrite8(tf->device, ioaddr->device_addr);
 		VPRINTK("device 0x%X\n", tf->device);
 	}
-
-	ata_wait_idle(ap);
 }
 EXPORT_SYMBOL_GPL(ata_sff_tf_load);
 

drivers/ata/pata_via.c

@@ -417,8 +417,6 @@ static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 			tf->lbam,
 			tf->lbah);
 	}
-
-	ata_wait_idle(ap);
 }
 
 static int via_port_start(struct ata_port *ap)