[PATCH 04/07] sata_mv: update ata_qc_from_tag

[Mark Lord <liml@xxxxxx>]

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

Signed-off-by: Mark Lord <mlord@xxxxxxxxx>

--- old/drivers/ata/sata_mv.c	2009-01-30 18:23:22.000000000 -0500
+++ linux/drivers/ata/sata_mv.c	2009-01-30 18:26:55.000000000 -0500
@@ -1628,6 +1628,12 @@
	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;
--
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