[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, 2 insertions, 2 deletions

diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index c05653c7779d..8b7e871ea0bf 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -304,11 +304,11 @@ static irqreturn_t nv_interrupt (int irq, void *dev_instance,
 
                 ap = host_set->ports[i];
                 if (ap &&
-                    !(ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))) {
+                    !(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);
                 }