[PATCH] libata: interrupt driven pio for LLD

libata.h:
libata-core:
  Add ATA_FLAG_PIO_POLLING flag for LLDs that expect interrupt for
command completion only.

sata_nv.c:
sata_vsc.c:
  irq handler is wrapper around ata_host_intr(), can handle PIO interrupts.

sata_promise.c:
sata_sx4.c:
sata_qstor.c:
sata_mv.c:
  Private irq handler.
  Polling mode ATA_FLAG_PIO_POLLING used for compatibility.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index cf94e0158a8d..92378d768c86 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -193,12 +193,12 @@ static irqreturn_t vsc_sata_interrupt (int irq, void *dev_instance,
                         struct ata_port *ap;
 
                         ap = host_set->ports[i];
-                        if (ap && !(ap->flags &
-                                    (ATA_FLAG_PORT_DISABLED|ATA_FLAG_NOINTR))) {
+                        if (ap &&
+                            !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
                                 struct ata_queued_cmd *qc;
 
                                 qc = ata_qc_from_tag(ap, ap->active_tag);
-                                if (qc && (!(qc->tf.ctl & ATA_NIEN)))
+                                if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
                                         handled += ata_host_intr(ap, qc);
                         }
                 }