sata_mv: update ata_qc_from_tag

Update the logic in ata_qc_from_tag() to match that used
in similar places elsewhere in libata.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 0c25f52249df..181f02127410 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1628,6 +1628,12 @@ static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
         if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
                 return NULL;
         qc = ata_qc_from_tag(ap, ap->link.active_tag);
+        if (qc) {
+                if (qc->tf.flags & ATA_TFLAG_POLLING)
+                        qc = NULL;
+                else if (!(qc->flags & ATA_QCFLAG_ACTIVE))
+                        qc = NULL;
+        }
         if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
                 qc = NULL;
         return qc;