linux-kernel - [PATCH v2 08/23] ata: sata_dwc_460ex: don't call ata_sff_qc

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Date:	Tue, 26 Apr 2016 12:03:09 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Tejun Heo <tj@...nel.org>, linux-ide@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Christian Lamparter <chunkeey@...glemail.com>,
	Måns Rullgård <mans@...sr.com>,
	Julian Margetson <runaway@...dw.ms>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 08/23] ata: sata_dwc_460ex: don't call ata_sff_qc_issue() on DMA commands

ata_sff_qc_issue() can't handle DMA commands and thus we have to avoid it for
them. Do call ata_bmdma_qc_issue() instead for this case. Note that the former
one distinguishes PIO and DMA mode and behaves accordingly.

Suggested-by: Christian Lamparter <chunkeey@...glemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/ata/sata_dwc_460ex.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 038e5fb..f1a4d49 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -1061,10 +1061,10 @@ static unsigned int sata_dwc_qc_issue(struct ata_queued_cmd *qc)
 			__func__, tag, qc->ap->link.sactive, sactive);
 
 		ap->ops->sff_tf_load(ap, &qc->tf);
-		sata_dwc_exec_command_by_tag(ap, &qc->tf, qc->tag,
+		sata_dwc_exec_command_by_tag(ap, &qc->tf, tag,
 					     SATA_DWC_CMD_ISSUED_PEND);
 	} else {
-		ata_sff_qc_issue(qc);
+		return ata_bmdma_qc_issue(qc);
 	}
 	return 0;
 }
-- 
2.8.0.rc3